EcoService Models Library (ESML)
loading
Variables Details
: (EM-883)
Back
- Collapse All Expand All
- Export Data to Spreadsheet (Free Viewers)
- View Variable Relationship Diagram (PDF)(1 pp, 80 KB, About PDF)
EM-883 | |
Document Author
variable.detail.emDocumentAuthorHelp
?
|
McKane, R. B., A. Brookes, K. Djang, M. Stieglitz, A. G. Abdelnour, F. Pan, J. J. Halama, P. B. Pettus and D. L. Phillips |
Document Year
variable.detail.emDocumentYearHelp
?
|
2014 |
Abovegournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the aboveground stem (AgStem) N pool. |
Aboveground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem biomass pool. |
Aboveground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the AgStem biomass pool of each cell of this cover type at initialization start. |
Aboveground stem mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the AgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Aboveground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass AgStem pool. |
Aboveground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass AgStem pool. |
Aboveground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass AgStem pool. |
Belowgournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the belowground stem (BgStem) N pool. |
Belowground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem biomass pool. |
Belowground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the BgStem biomass pool of each cell of this cover type at initialization start. |
Belowground stem mortality (annual fraction) |
Belowground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass BgStem pool. |
Belowground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass BgStem pool. |
Belowground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass BgStem pool. |
Carbon assimilation efficiency of microbes ?Comment:This is a globally-applicable term of the Potter equation. |
Curvature parameter of General Ecosystem Model temperature function ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Detritus aboveground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem detritus pool. |
Detritus aboveground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the AgStem detritus pool of each cell of this cover type at initialization start. |
Detritus aboveground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of AgStem detritus pool’s Nitrogen amount. |
Detritus belowground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus belowground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the BgStem detritus pool of each cell of this cover type at initialization start. |
Detritus belowground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of BgStem detritus pool’s Nitrogen amount. |
Detritus leaf C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf detritus pool. |
Detritus leaf carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Leaf detritus pool of each cell of this cover type at initialization start. |
Detritus leaf N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Leaf detritus pool’s Nitrogen amount. |
Detritus root C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus root carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Root detritus pool of each cell of this cover type at initialization start. |
Detritus root N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Root detritus pool’s Nitrogen amount. |
DOC pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
DON pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
Dry nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
Fraction of humus decomposition lost to the atmosphere as CO2 ?Comment:You will need to iteratively calibrate “co2RespriationFraction” in order to obtain a good fit between simulated and observed stream DOC concentrations. |
Fraction of net nitrogen mineralized that is nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Gale-Grigal root parameter ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. VELMA uses the method of Gale and Grigal (1987) to vertically distribute a cover type’s specified total root biomass. Jackson et al. (1996) used the Gale-Grigal method to characterize rooting patterns for terrestrial biomes globally. In the absence of measured data to calibrate GaleGrigalBetaParam for your site’s cover types, we recommend consulting Jackson et al.’s Table 1and Figure 1. |
Humus C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Leaf biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf biomass pool. |
Leaf carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Leaf biomass pool of each cell of this cover type at initialization start. |
Leaf detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the leaf N pool. |
Leaf mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Leaf mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Leaf pool. |
Leaf mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Leaf pool. |
Leaf mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for biomass Leaf pool. |
Maximum fraction of NH4 nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Maximum temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
N2O flux associated with nitrification ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
NH4 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NH4 uptake for biomass uptake equation. |
NH4 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NH4 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant kn for Michaelis Menton NH4 uptake in gN/m^2. |
Nitrogen fixation asymbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by asymbiotic processes. |
Nitrogen fixation moisture scalar K ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. K value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation moisture scalar lambda ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Lambda value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation symbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by symbiotic processes. |
Nitrogen fixation temperature scalar curvature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Curvature parameter ("qx") of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar maximum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar optimum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Optimum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation uptake fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction (in the range [0.0 1.0]) of the symbiotic fixed Nitrogen that is available for plant NPP. The remainder of the total is allocated as Humus symbiotic fixed nitrogen. |
Nitrogen fixer fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of a cell's plant matter (in the range [0.0 1.0]) that performs Nitrogen fixation. |
NO3 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NO3 uptake for biomass uptake equation. |
NO3 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NO3 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant, kn, for Michaelis-Menten NO3 uptake in gN/m^2. |
Optimal temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Plant uptake fraction allocated to aboveground biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of daily plant uptake (NPP) ALOTTED TO STEM POOLS for a cell of this cover type allotted to the biomass AgStem pool. The remaining NPP allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to belowground stem biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The remaining plant uptake (NPP) allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to leaf biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Leaf pool. |
Plant uptake fraction allocated to root biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Root pool. |
Root biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root biomass pool. (All layers of this pool use the same CtoN ratio value.) |
Root carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Root biomass pool of each cell of this cover type at initialization start. |
Root detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the root N pool. |
Root mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Root mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Root pool. |
Root mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Root pool. |
Root mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass Root pool. |
Soil pH ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 0 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 1 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 2 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 3 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Wet nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
|
Variable ID
variable.detail.varIdHelp
?
|
21616 | 21203 | 21202 | 21215 | 21216 | 21217 | 21218 | 21617 | 21206 | 21205 | 21254 | 21255 | 21256 | 21257 | 21619 | 21280 | 21266 | 21265 | 21267 | 21269 | 21268 | 21270 | 21263 | 21262 | 21264 | 21272 | 21271 | 21273 | 21293 | 21292 | 21288 | 21620 | 21589 | 21281 | 21283 | 21282 | 21284 | 21200 | 21199 | 21615 | 21211 | 21212 | 21213 | 21214 | 21590 | 21279 | 21591 | 21274 | 21290 | 21275 | 21629 | 21627 | 21626 | 21621 | 21625 | 21624 | 21623 | 21628 | 21622 | 21276 | 21291 | 21277 | 21278 | 21204 | 21207 | 21201 | 21210 | 21209 | 21208 | 21618 | 21258 | 21259 | 21260 | 21261 | 21596 | 21592 | 21593 | 21594 | 21595 | 21289 |
Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | K | Not reported | Not reported | K | Not reported | Not reported | K | Not reported | Not reported | K | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | nh4Kn | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | no3Kn | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | |
Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
?
|
Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
Quantitative (Cardinal Only) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the BgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
?
|
Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal |
unitless (0-1) | unitless | g C m^-2 | % | unitless | unitless | unitless | unitless (0-1) | unitless | g C m^-2 | % | unitless | unitless | unitless | unitless (0-1) | unitless | unitless | g C m^-2 | unitless (0-1) | unitless | g C m^-2 | unitless (0-1) | unitless | g C m^-2 | unitless (0-1) | unitless | g C m^-2 | unitless (0-1) | g C m^-2 | g N m^-2 | g N m^-2 yr^-1 | % | % | unitless | unitless | g C m^-2 | unitless | unitless | g C m^-2 | unitless (0-1) | % | unitless | unitless | unitless | % | °C | g N m^-2 day^-1 | g N m^-2 day^-1 | g N m^-2 | g N m^-2 | g N m^-2 day^-1 | Not reported | Not reported | g N fixed/g fixer fine root biomass N^-1 m^-2 day^-1 | Not reported | °C | °C | unitless (0-1) | unitless (0-1) | g N m^-2 day^-1 | g N m^-2 | g N m^-2 | °C | % | % | % | % | unitless | g C m^-2 | unitless (0-1) | % | unitless | unitless | unitless | unitless | unitless | unitless | unitless | unitless | g N m^-2 yr^-1 |
Abovegournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the aboveground stem (AgStem) N pool. |
Aboveground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem biomass pool. |
Aboveground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the AgStem biomass pool of each cell of this cover type at initialization start. |
Aboveground stem mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the AgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Aboveground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass AgStem pool. |
Aboveground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass AgStem pool. |
Aboveground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass AgStem pool. |
Belowgournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the belowground stem (BgStem) N pool. |
Belowground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem biomass pool. |
Belowground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the BgStem biomass pool of each cell of this cover type at initialization start. |
Belowground stem mortality (annual fraction) |
Belowground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass BgStem pool. |
Belowground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass BgStem pool. |
Belowground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass BgStem pool. |
Carbon assimilation efficiency of microbes ?Comment:This is a globally-applicable term of the Potter equation. |
Curvature parameter of General Ecosystem Model temperature function ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Detritus aboveground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem detritus pool. |
Detritus aboveground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the AgStem detritus pool of each cell of this cover type at initialization start. |
Detritus aboveground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of AgStem detritus pool’s Nitrogen amount. |
Detritus belowground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus belowground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the BgStem detritus pool of each cell of this cover type at initialization start. |
Detritus belowground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of BgStem detritus pool’s Nitrogen amount. |
Detritus leaf C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf detritus pool. |
Detritus leaf carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Leaf detritus pool of each cell of this cover type at initialization start. |
Detritus leaf N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Leaf detritus pool’s Nitrogen amount. |
Detritus root C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus root carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Root detritus pool of each cell of this cover type at initialization start. |
Detritus root N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Root detritus pool’s Nitrogen amount. |
DOC pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
DON pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
Dry nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
Fraction of humus decomposition lost to the atmosphere as CO2 ?Comment:You will need to iteratively calibrate “co2RespriationFraction” in order to obtain a good fit between simulated and observed stream DOC concentrations. |
Fraction of net nitrogen mineralized that is nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Gale-Grigal root parameter ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. VELMA uses the method of Gale and Grigal (1987) to vertically distribute a cover type’s specified total root biomass. Jackson et al. (1996) used the Gale-Grigal method to characterize rooting patterns for terrestrial biomes globally. In the absence of measured data to calibrate GaleGrigalBetaParam for your site’s cover types, we recommend consulting Jackson et al.’s Table 1and Figure 1. |
Humus C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Leaf biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf biomass pool. |
Leaf carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Leaf biomass pool of each cell of this cover type at initialization start. |
Leaf detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the leaf N pool. |
Leaf mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Leaf mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Leaf pool. |
Leaf mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Leaf pool. |
Leaf mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for biomass Leaf pool. |
Maximum fraction of NH4 nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Maximum temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
N2O flux associated with nitrification ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
NH4 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NH4 uptake for biomass uptake equation. |
NH4 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NH4 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant kn for Michaelis Menton NH4 uptake in gN/m^2. |
Nitrogen fixation asymbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by asymbiotic processes. |
Nitrogen fixation moisture scalar K ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. K value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation moisture scalar lambda ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Lambda value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation symbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by symbiotic processes. |
Nitrogen fixation temperature scalar curvature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Curvature parameter ("qx") of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar maximum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar optimum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Optimum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation uptake fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction (in the range [0.0 1.0]) of the symbiotic fixed Nitrogen that is available for plant NPP. The remainder of the total is allocated as Humus symbiotic fixed nitrogen. |
Nitrogen fixer fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of a cell's plant matter (in the range [0.0 1.0]) that performs Nitrogen fixation. |
NO3 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NO3 uptake for biomass uptake equation. |
NO3 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NO3 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant, kn, for Michaelis-Menten NO3 uptake in gN/m^2. |
Optimal temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Plant uptake fraction allocated to aboveground biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of daily plant uptake (NPP) ALOTTED TO STEM POOLS for a cell of this cover type allotted to the biomass AgStem pool. The remaining NPP allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to belowground stem biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The remaining plant uptake (NPP) allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to leaf biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Leaf pool. |
Plant uptake fraction allocated to root biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Root pool. |
Root biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root biomass pool. (All layers of this pool use the same CtoN ratio value.) |
Root carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Root biomass pool of each cell of this cover type at initialization start. |
Root detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the root N pool. |
Root mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Root mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Root pool. |
Root mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Root pool. |
Root mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass Root pool. |
Soil pH ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 0 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 1 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 2 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 3 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Wet nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
|
Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
?
|
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
?
|
Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter |
Response Variable Type
variable.detail.resClassHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Data Source/Type
variable.detail.dataTypeHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Classification Hierarchy
variable.detail.vchLevel1Help
?
|
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
N. Not classified |
N. Not classified |
N. Not classified |
N. Not classified |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Human-caused release, presence or characteristics of polluting substances |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Biological characteristics, processes or requirements of living ecosystem components |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Biomass, litter or residue characteristics |
--Physical/chemical characteristics of nonliving ecosystem components |
--Human-caused release, presence or characteristics of polluting substances |
|||||
----Quality or composition of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Carbon-related characteristics of ecosystem components |
----Physical/chemical characteristics of air, meteorology and precipitation |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Carbon-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Release, presence or characteristics of reactive forms of nitrogen in air or water |
----Carbon-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Biological characteristics, processes or requirements of flora and fungi |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Nitrogen-related characteristics of ecosystem components |
----Physical/chemical characteristics of air, meteorology and precipitation |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Physical/chemical characteristics of air, meteorology and precipitation |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Nitrogen-related characteristics of ecosystem components |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Quality or composition of biomass, litter or residue |
----Mass or quantity of biomass, litter or residue |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Physical/chemical characteristics of soils, substrates, rocks |
----Release, presence or characteristics of reactive forms of nitrogen in air or water |
|||||
------Organic carbon mineralization |
------Meteorology data and parameters (including precipitation) |
------Carbon presence (in terrestrial or aquatic ecosystem components) |
------Nitrogen presence (in terrestrial ecosystem components) |
------Organic carbon mineralization |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Plant root characteristics |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Meteorology data and parameters (including precipitation) |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Nitrogen presence (in terrestrial ecosystem components) |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Biological nitrogen fixation |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Nitrogen presence (in terrestrial ecosystem components) |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Meteorology data and parameters (including precipitation) |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Soil chemistry, composition, and characteristics (non-contaminants) |
Abovegournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the aboveground stem (AgStem) N pool. |
Aboveground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem biomass pool. |
Aboveground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the AgStem biomass pool of each cell of this cover type at initialization start. |
Aboveground stem mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the AgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Aboveground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass AgStem pool. |
Aboveground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass AgStem pool. |
Aboveground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass AgStem pool. |
Belowgournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the belowground stem (BgStem) N pool. |
Belowground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem biomass pool. |
Belowground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the BgStem biomass pool of each cell of this cover type at initialization start. |
Belowground stem mortality (annual fraction) |
Belowground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass BgStem pool. |
Belowground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass BgStem pool. |
Belowground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass BgStem pool. |
Carbon assimilation efficiency of microbes ?Comment:This is a globally-applicable term of the Potter equation. |
Curvature parameter of General Ecosystem Model temperature function ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Detritus aboveground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem detritus pool. |
Detritus aboveground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the AgStem detritus pool of each cell of this cover type at initialization start. |
Detritus aboveground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of AgStem detritus pool’s Nitrogen amount. |
Detritus belowground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus belowground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the BgStem detritus pool of each cell of this cover type at initialization start. |
Detritus belowground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of BgStem detritus pool’s Nitrogen amount. |
Detritus leaf C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf detritus pool. |
Detritus leaf carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Leaf detritus pool of each cell of this cover type at initialization start. |
Detritus leaf N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Leaf detritus pool’s Nitrogen amount. |
Detritus root C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus root carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Root detritus pool of each cell of this cover type at initialization start. |
Detritus root N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Root detritus pool’s Nitrogen amount. |
DOC pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
DON pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
Dry nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
Fraction of humus decomposition lost to the atmosphere as CO2 ?Comment:You will need to iteratively calibrate “co2RespriationFraction” in order to obtain a good fit between simulated and observed stream DOC concentrations. |
Fraction of net nitrogen mineralized that is nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Gale-Grigal root parameter ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. VELMA uses the method of Gale and Grigal (1987) to vertically distribute a cover type’s specified total root biomass. Jackson et al. (1996) used the Gale-Grigal method to characterize rooting patterns for terrestrial biomes globally. In the absence of measured data to calibrate GaleGrigalBetaParam for your site’s cover types, we recommend consulting Jackson et al.’s Table 1and Figure 1. |
Humus C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Leaf biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf biomass pool. |
Leaf carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Leaf biomass pool of each cell of this cover type at initialization start. |
Leaf detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the leaf N pool. |
Leaf mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Leaf mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Leaf pool. |
Leaf mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Leaf pool. |
Leaf mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for biomass Leaf pool. |
Maximum fraction of NH4 nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Maximum temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
N2O flux associated with nitrification ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
NH4 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NH4 uptake for biomass uptake equation. |
NH4 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NH4 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant kn for Michaelis Menton NH4 uptake in gN/m^2. |
Nitrogen fixation asymbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by asymbiotic processes. |
Nitrogen fixation moisture scalar K ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. K value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation moisture scalar lambda ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Lambda value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation symbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by symbiotic processes. |
Nitrogen fixation temperature scalar curvature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Curvature parameter ("qx") of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar maximum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar optimum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Optimum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation uptake fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction (in the range [0.0 1.0]) of the symbiotic fixed Nitrogen that is available for plant NPP. The remainder of the total is allocated as Humus symbiotic fixed nitrogen. |
Nitrogen fixer fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of a cell's plant matter (in the range [0.0 1.0]) that performs Nitrogen fixation. |
NO3 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NO3 uptake for biomass uptake equation. |
NO3 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NO3 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant, kn, for Michaelis-Menten NO3 uptake in gN/m^2. |
Optimal temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Plant uptake fraction allocated to aboveground biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of daily plant uptake (NPP) ALOTTED TO STEM POOLS for a cell of this cover type allotted to the biomass AgStem pool. The remaining NPP allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to belowground stem biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The remaining plant uptake (NPP) allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to leaf biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Leaf pool. |
Plant uptake fraction allocated to root biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Root pool. |
Root biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root biomass pool. (All layers of this pool use the same CtoN ratio value.) |
Root carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Root biomass pool of each cell of this cover type at initialization start. |
Root detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the root N pool. |
Root mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Root mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Root pool. |
Root mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Root pool. |
Root mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass Root pool. |
Soil pH ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 0 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 1 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 2 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 3 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Wet nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
|
Spatial Extent Area
variable.detail.spExtentHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Spatially Distributed?
variable.detail.spDistributedHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Spatial Grain Type
variable.detail.spGrainTypeHelp
?
|
Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables |
Spatial Grain Size
variable.detail.spGrainSizeHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Spatial Density
variable.detail.spDensityHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
?
|
Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Average Annual Precipitation | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Total Annual Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Total Annual Reduced Nitrogen Deposition | Average Annual Precipitation | Total Annual Reduced Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Natural Biological Nitrogen Fixation | Total Annual Reduced Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Average Annual Precipitation | Total Annual Reduced Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Total Annual Reduced Nitrogen Deposition | Carbon storage by tree biomass (kg/m2) | Carbon storage by tree biomass (kg/m2) | Total Annual Nitrogen Deposition |
Abovegournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the aboveground stem (AgStem) N pool. |
Aboveground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem biomass pool. |
Aboveground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the AgStem biomass pool of each cell of this cover type at initialization start. |
Aboveground stem mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the AgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Aboveground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass AgStem pool. |
Aboveground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass AgStem pool. |
Aboveground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass AgStem pool. |
Belowgournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the belowground stem (BgStem) N pool. |
Belowground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem biomass pool. |
Belowground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the BgStem biomass pool of each cell of this cover type at initialization start. |
Belowground stem mortality (annual fraction) |
Belowground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass BgStem pool. |
Belowground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass BgStem pool. |
Belowground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass BgStem pool. |
Carbon assimilation efficiency of microbes ?Comment:This is a globally-applicable term of the Potter equation. |
Curvature parameter of General Ecosystem Model temperature function ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Detritus aboveground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem detritus pool. |
Detritus aboveground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the AgStem detritus pool of each cell of this cover type at initialization start. |
Detritus aboveground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of AgStem detritus pool’s Nitrogen amount. |
Detritus belowground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus belowground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the BgStem detritus pool of each cell of this cover type at initialization start. |
Detritus belowground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of BgStem detritus pool’s Nitrogen amount. |
Detritus leaf C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf detritus pool. |
Detritus leaf carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Leaf detritus pool of each cell of this cover type at initialization start. |
Detritus leaf N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Leaf detritus pool’s Nitrogen amount. |
Detritus root C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus root carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Root detritus pool of each cell of this cover type at initialization start. |
Detritus root N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Root detritus pool’s Nitrogen amount. |
DOC pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
DON pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
Dry nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
Fraction of humus decomposition lost to the atmosphere as CO2 ?Comment:You will need to iteratively calibrate “co2RespriationFraction” in order to obtain a good fit between simulated and observed stream DOC concentrations. |
Fraction of net nitrogen mineralized that is nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Gale-Grigal root parameter ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. VELMA uses the method of Gale and Grigal (1987) to vertically distribute a cover type’s specified total root biomass. Jackson et al. (1996) used the Gale-Grigal method to characterize rooting patterns for terrestrial biomes globally. In the absence of measured data to calibrate GaleGrigalBetaParam for your site’s cover types, we recommend consulting Jackson et al.’s Table 1and Figure 1. |
Humus C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Leaf biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf biomass pool. |
Leaf carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Leaf biomass pool of each cell of this cover type at initialization start. |
Leaf detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the leaf N pool. |
Leaf mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Leaf mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Leaf pool. |
Leaf mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Leaf pool. |
Leaf mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for biomass Leaf pool. |
Maximum fraction of NH4 nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Maximum temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
N2O flux associated with nitrification ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
NH4 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NH4 uptake for biomass uptake equation. |
NH4 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NH4 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant kn for Michaelis Menton NH4 uptake in gN/m^2. |
Nitrogen fixation asymbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by asymbiotic processes. |
Nitrogen fixation moisture scalar K ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. K value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation moisture scalar lambda ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Lambda value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation symbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by symbiotic processes. |
Nitrogen fixation temperature scalar curvature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Curvature parameter ("qx") of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar maximum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar optimum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Optimum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation uptake fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction (in the range [0.0 1.0]) of the symbiotic fixed Nitrogen that is available for plant NPP. The remainder of the total is allocated as Humus symbiotic fixed nitrogen. |
Nitrogen fixer fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of a cell's plant matter (in the range [0.0 1.0]) that performs Nitrogen fixation. |
NO3 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NO3 uptake for biomass uptake equation. |
NO3 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NO3 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant, kn, for Michaelis-Menten NO3 uptake in gN/m^2. |
Optimal temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Plant uptake fraction allocated to aboveground biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of daily plant uptake (NPP) ALOTTED TO STEM POOLS for a cell of this cover type allotted to the biomass AgStem pool. The remaining NPP allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to belowground stem biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The remaining plant uptake (NPP) allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to leaf biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Leaf pool. |
Plant uptake fraction allocated to root biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Root pool. |
Root biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root biomass pool. (All layers of this pool use the same CtoN ratio value.) |
Root carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Root biomass pool of each cell of this cover type at initialization start. |
Root detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the root N pool. |
Root mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Root mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Root pool. |
Root mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Root pool. |
Root mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass Root pool. |
Soil pH ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 0 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 1 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 2 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 3 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Wet nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
|
Temporal Extent
variable.detail.tempExtentHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporally Distributed?
variable.detail.tempDistributedHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Regular Temporal Grain?
variable.detail.regularTempGrainHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporal Density
variable.detail.tempDensityHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Abovegournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the aboveground stem (AgStem) N pool. |
Aboveground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem biomass pool. |
Aboveground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the AgStem biomass pool of each cell of this cover type at initialization start. |
Aboveground stem mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the AgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Aboveground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass AgStem pool. |
Aboveground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass AgStem pool. |
Aboveground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass AgStem pool. |
Belowgournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the belowground stem (BgStem) N pool. |
Belowground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem biomass pool. |
Belowground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the BgStem biomass pool of each cell of this cover type at initialization start. |
Belowground stem mortality (annual fraction) |
Belowground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass BgStem pool. |
Belowground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass BgStem pool. |
Belowground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass BgStem pool. |
Carbon assimilation efficiency of microbes ?Comment:This is a globally-applicable term of the Potter equation. |
Curvature parameter of General Ecosystem Model temperature function ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Detritus aboveground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem detritus pool. |
Detritus aboveground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the AgStem detritus pool of each cell of this cover type at initialization start. |
Detritus aboveground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of AgStem detritus pool’s Nitrogen amount. |
Detritus belowground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus belowground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the BgStem detritus pool of each cell of this cover type at initialization start. |
Detritus belowground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of BgStem detritus pool’s Nitrogen amount. |
Detritus leaf C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf detritus pool. |
Detritus leaf carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Leaf detritus pool of each cell of this cover type at initialization start. |
Detritus leaf N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Leaf detritus pool’s Nitrogen amount. |
Detritus root C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus root carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Root detritus pool of each cell of this cover type at initialization start. |
Detritus root N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Root detritus pool’s Nitrogen amount. |
DOC pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
DON pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
Dry nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
Fraction of humus decomposition lost to the atmosphere as CO2 ?Comment:You will need to iteratively calibrate “co2RespriationFraction” in order to obtain a good fit between simulated and observed stream DOC concentrations. |
Fraction of net nitrogen mineralized that is nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Gale-Grigal root parameter ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. VELMA uses the method of Gale and Grigal (1987) to vertically distribute a cover type’s specified total root biomass. Jackson et al. (1996) used the Gale-Grigal method to characterize rooting patterns for terrestrial biomes globally. In the absence of measured data to calibrate GaleGrigalBetaParam for your site’s cover types, we recommend consulting Jackson et al.’s Table 1and Figure 1. |
Humus C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Leaf biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf biomass pool. |
Leaf carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Leaf biomass pool of each cell of this cover type at initialization start. |
Leaf detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the leaf N pool. |
Leaf mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Leaf mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Leaf pool. |
Leaf mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Leaf pool. |
Leaf mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for biomass Leaf pool. |
Maximum fraction of NH4 nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Maximum temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
N2O flux associated with nitrification ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
NH4 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NH4 uptake for biomass uptake equation. |
NH4 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NH4 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant kn for Michaelis Menton NH4 uptake in gN/m^2. |
Nitrogen fixation asymbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by asymbiotic processes. |
Nitrogen fixation moisture scalar K ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. K value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation moisture scalar lambda ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Lambda value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation symbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by symbiotic processes. |
Nitrogen fixation temperature scalar curvature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Curvature parameter ("qx") of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar maximum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar optimum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Optimum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation uptake fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction (in the range [0.0 1.0]) of the symbiotic fixed Nitrogen that is available for plant NPP. The remainder of the total is allocated as Humus symbiotic fixed nitrogen. |
Nitrogen fixer fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of a cell's plant matter (in the range [0.0 1.0]) that performs Nitrogen fixation. |
NO3 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NO3 uptake for biomass uptake equation. |
NO3 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NO3 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant, kn, for Michaelis-Menten NO3 uptake in gN/m^2. |
Optimal temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Plant uptake fraction allocated to aboveground biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of daily plant uptake (NPP) ALOTTED TO STEM POOLS for a cell of this cover type allotted to the biomass AgStem pool. The remaining NPP allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to belowground stem biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The remaining plant uptake (NPP) allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to leaf biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Leaf pool. |
Plant uptake fraction allocated to root biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Root pool. |
Root biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root biomass pool. (All layers of this pool use the same CtoN ratio value.) |
Root carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Root biomass pool of each cell of this cover type at initialization start. |
Root detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the root N pool. |
Root mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Root mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Root pool. |
Root mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Root pool. |
Root mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass Root pool. |
Soil pH ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 0 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 1 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 2 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 3 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Wet nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | |
Min Value
variable.detail.minEstHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Max Value
variable.detail.estHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Other Value Type
variable.detail.natureOtherEstHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Other Value
variable.detail.otherEstHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Abovegournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the aboveground stem (AgStem) N pool. |
Aboveground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem biomass pool. |
Aboveground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the AgStem biomass pool of each cell of this cover type at initialization start. |
Aboveground stem mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the AgStem biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Aboveground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass AgStem pool. |
Aboveground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass AgStem pool. |
Aboveground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass AgStem pool. |
Belowgournd stem detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the belowground stem (BgStem) N pool. |
Belowground stem biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem biomass pool. |
Belowground stem carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the BgStem biomass pool of each cell of this cover type at initialization start. |
Belowground stem mortality (annual fraction) |
Belowground stem mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass BgStem pool. |
Belowground stem mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass BgStem pool. |
Belowground stem mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass BgStem pool. |
Carbon assimilation efficiency of microbes ?Comment:This is a globally-applicable term of the Potter equation. |
Curvature parameter of General Ecosystem Model temperature function ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Detritus aboveground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s AgStem detritus pool. |
Detritus aboveground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the AgStem detritus pool of each cell of this cover type at initialization start. |
Detritus aboveground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of AgStem detritus pool’s Nitrogen amount. |
Detritus belowground stem C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s BgStem detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus belowground stem carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the BgStem detritus pool of each cell of this cover type at initialization start. |
Detritus belowground stem N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of BgStem detritus pool’s Nitrogen amount. |
Detritus leaf C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf detritus pool. |
Detritus leaf carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Leaf detritus pool of each cell of this cover type at initialization start. |
Detritus leaf N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Leaf detritus pool’s Nitrogen amount. |
Detritus root C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root detritus pool. (All layers of this pool use the same CtoN ratio value.) |
Detritus root carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of detritus (in grams of Carbon) placed in the Root detritus pool of each cell of this cover type at initialization start. |
Detritus root N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum decay rate for Potter decomposition of Root detritus pool’s Nitrogen amount. |
DOC pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
DON pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
Dry nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
Fraction of humus decomposition lost to the atmosphere as CO2 ?Comment:You will need to iteratively calibrate “co2RespriationFraction” in order to obtain a good fit between simulated and observed stream DOC concentrations. |
Fraction of net nitrogen mineralized that is nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Gale-Grigal root parameter ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. VELMA uses the method of Gale and Grigal (1987) to vertically distribute a cover type’s specified total root biomass. Jackson et al. (1996) used the Gale-Grigal method to characterize rooting patterns for terrestrial biomes globally. In the absence of measured data to calibrate GaleGrigalBetaParam for your site’s cover types, we recommend consulting Jackson et al.’s Table 1and Figure 1. |
Humus C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus carbon (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Humus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. |
Leaf biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Leaf biomass pool. |
Leaf carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Leaf biomass pool of each cell of this cover type at initialization start. |
Leaf detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the leaf N pool. |
Leaf mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Leaf mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Leaf pool. |
Leaf mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Leaf pool. |
Leaf mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for biomass Leaf pool. |
Maximum fraction of NH4 nitrified per day ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Maximum temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
N2O flux associated with nitrification ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
NH4 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NH4 uptake for biomass uptake equation. |
NH4 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NH4 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant kn for Michaelis Menton NH4 uptake in gN/m^2. |
Nitrogen fixation asymbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by asymbiotic processes. |
Nitrogen fixation moisture scalar K ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. K value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation moisture scalar lambda ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Lambda value of the Weibull equation used to compute a water scalar for Nitrogen fixation. |
Nitrogen fixation symbiotic maximum ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum amount of Nitrogen converted from the atmosphere by symbiotic processes. |
Nitrogen fixation temperature scalar curvature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Curvature parameter ("qx") of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar maximum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Maximum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation temperature scalar optimum temperature ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Optimum temperature (in degrees C) parameter of GEM temperature scalar function for Nitrogen fixation. |
Nitrogen fixation uptake fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction (in the range [0.0 1.0]) of the symbiotic fixed Nitrogen that is available for plant NPP. The remainder of the total is allocated as Humus symbiotic fixed nitrogen. |
Nitrogen fixer fraction ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of a cell's plant matter (in the range [0.0 1.0]) that performs Nitrogen fixation. |
NO3 maximum uptake rate (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Cover-specific maximum rate of NO3 uptake for biomass uptake equation. |
NO3 pool (initial) ?Comment:The values specified should represent the sum of all 4 soil layers (total soil column) averaged across the watershed. On day 1 of a simulation, VELMA will use the specified parameter values to calculate the fraction of each nutrient’s total pool to allocate to each of the four soil layers. This is done uniformly for all grid cells on day 1. |
NO3 uptake half saturation (plant) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Half saturation constant, kn, for Michaelis-Menten NO3 uptake in gN/m^2. |
Optimal temperature plant uptake of NH4 and NO3 ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. Parameter definitions (see Rastetter et al. (1991) for a description of the General Ecosystem Model (GEM) temperature function and parameters for simulating plant nitrogen uptake). |
Plant uptake fraction allocated to aboveground biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of daily plant uptake (NPP) ALOTTED TO STEM POOLS for a cell of this cover type allotted to the biomass AgStem pool. The remaining NPP allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to belowground stem biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The remaining plant uptake (NPP) allotted to stem pools goes to the biomass BgStem pool. NOTE: Total daily NPP is reduced by the fractions for leaf and root pools first. Any remainder is the daily NPP allotted to stem pools. |
Plant uptake fraction allocated to leaf biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Leaf pool. |
Plant uptake fraction allocated to root biomass nitrogen ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of total daily plant uptake (NPP) for a cell of this cover type allotted to the biomass Root pool. |
Root biomass C to N ratio (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The Carbon-to-Nitrogen ratio of the cover type’s Root biomass pool. (All layers of this pool use the same CtoN ratio value.) |
Root carbon biomass (initial) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The amount of biomass (in grams of Carbon) placed in the Root biomass pool of each cell of this cover type at initialization start. |
Root detritus N maximum decay rate ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The maximum rate of decay (0 – 1) for the root N pool. |
Root mortality (annual fraction) ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The fraction of the Leaf biomass Pool annual mortality amount actually subtracted from that pool per day of senescence. The default value for this fraction is 1.0 (i.e. the full per-day amount) and the valid range is [0.0 to 1.0]. Warning! Users unfamiliar with this parameter's behavior should leave it set to the default value of 1.0. |
Root mortality denominator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s denominator coefficient value for the biomass Root pool. |
Root mortality exponential coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s exponential coefficient value for the biomass Root pool. |
Root mortality numerator coefficient ?Comment:Variable whose value is constant with respect to the driving class variable; Land cover. The mortality equation’s numerator coefficient value for the biomass Root pool. |
Soil pH ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 0 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 1 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 2 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Soil-specific coefficient 3 for Water Filled Pore Space effect on nitrification equation ?Comment:Variable of the optional nitrification subroutine. Variable whose value is constant with respect to the driving class variable; Soil type. The default (recommended) version of the nitrification subroutine in VELMA v2.0 is based on Parton et al. 2001, with recent modifications made by Dr. Stephen Del Grosso (steve.delgrosso@ars.usda.gov) and coworkers. Dr. Del Grosso’s modifications are described in his NGAS spreadsheet model. |
Wet nitrogen input ?Comment:The daily rate of atmospheric N deposition (wet + dry) is the same every day of the year, i.e., annual total N deposition/365 = daily N deposition. Daily N deposition (Nin) accumulates on leaves & other surfaces (NinBank) until a liquid precipitation (rain + snowmelt) event. |
|
Variability Expression Given?
variable.detail.variabilityExpHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Variability Metric
variable.detail.variabilityMetricHelp
?
|
None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None |
Variability Value
variable.detail.variabilityValueHelp
?
|
None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None |
Variability Units
|
None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None |
Resampling Used?
variable.detail.bootstrappingHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
?
|
Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Variable ID
variable.detail.varIdHelp
?
|
Validated?
variable.detail.resValidatedHelp
?
|
Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
?
|
Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
?
|
Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
?
|
Validation Metric
variable.detail.validationMetricHelp
?
|
Validation Value
variable.detail.validationValHelp
?
|
Validation Units
|
Use of Measured Response Data
variable.detail.measuredResponseDataHelp
?
|