EcoService Models Library (ESML)
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Variables Details
: (EM-884)
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EM Identity and Description
EM-884 | |
Document Author
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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
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2014 |
Variable General Info
Initial uniform soil moisture ?Comment:Because soil moisture can vary significantly in space and time, it would be extremely difficult to specify realistic soil moisture amounts for every soil layer in every cell within a watershed. A more practical method is to specify a uniform amount of initial soil moisture for all layers and cells, and then allow these initial values to adjust to realistic levels during a “spin up” period of years prior to the simulated years of interest. By default, VELMA set the initial water content of all cells and layers to the field capacity value specified for each soil type. , i.e., when the parameter initialUniformSoilMoisture is set to its default value of -1 (if it is set to any other value, reset it to -1). |
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Variable ID
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21534 |
Not reported | |
Qualitative-Quantitative
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Quantitative (Cardinal Only) |
Cardinal-Ordinal
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Cardinal |
unitless |
Variable Typology
Initial uniform soil moisture ?Comment:Because soil moisture can vary significantly in space and time, it would be extremely difficult to specify realistic soil moisture amounts for every soil layer in every cell within a watershed. A more practical method is to specify a uniform amount of initial soil moisture for all layers and cells, and then allow these initial values to adjust to realistic levels during a “spin up” period of years prior to the simulated years of interest. By default, VELMA set the initial water content of all cells and layers to the field capacity value specified for each soil type. , i.e., when the parameter initialUniformSoilMoisture is set to its default value of -1 (if it is set to any other value, reset it to -1). |
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Predictor-Intermediate-Response
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Predictor |
Predictor Variable Type
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Constant or Parameter |
Response Variable Type
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Not applicable |
Data Source/Type
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Not applicable |
Variable Classification Hierarchy
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
--Physical/chemical characteristics of nonliving ecosystem components |
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----Physical/chemical characteristics of soils, substrates, rocks |
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------Soil hydrologic characteristics |
Variable Spatial Characteristics
Initial uniform soil moisture ?Comment:Because soil moisture can vary significantly in space and time, it would be extremely difficult to specify realistic soil moisture amounts for every soil layer in every cell within a watershed. A more practical method is to specify a uniform amount of initial soil moisture for all layers and cells, and then allow these initial values to adjust to realistic levels during a “spin up” period of years prior to the simulated years of interest. By default, VELMA set the initial water content of all cells and layers to the field capacity value specified for each soil type. , i.e., when the parameter initialUniformSoilMoisture is set to its default value of -1 (if it is set to any other value, reset it to -1). |
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Spatial Extent Area
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Not recorded for Constant or Parameter Variables |
Spatially Distributed?
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Not recorded for Constant or Parameter Variables |
Observations Spatially Patterned?
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Not recorded for Constant or Parameter Variables |
Spatial Grain Type
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Not recorded for Constant or Paarameter Variables |
Spatial Grain Size
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Not recorded for Constant or Parameter Variables |
Spatial Density
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Not recorded for Constant or Parameter Variables |
EnviroAtlas URL
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Variable Temporal Characteristics
Initial uniform soil moisture ?Comment:Because soil moisture can vary significantly in space and time, it would be extremely difficult to specify realistic soil moisture amounts for every soil layer in every cell within a watershed. A more practical method is to specify a uniform amount of initial soil moisture for all layers and cells, and then allow these initial values to adjust to realistic levels during a “spin up” period of years prior to the simulated years of interest. By default, VELMA set the initial water content of all cells and layers to the field capacity value specified for each soil type. , i.e., when the parameter initialUniformSoilMoisture is set to its default value of -1 (if it is set to any other value, reset it to -1). |
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Temporal Extent
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Not recorded for Constant or Parameter Variables |
Temporally Distributed?
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Not recorded for Constant or Parameter Variables |
Regular Temporal Grain?
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Not recorded for Constant or Parameter Variables |
Temporal Grain Size Value
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Not recorded for Constant or Parameter Variables |
Temporal Grain Size Units
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Not recorded for Constant or Parameter Variables |
Temporal Density
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Not recorded for Constant or Parameter Variables |
Variable Values
Initial uniform soil moisture ?Comment:Because soil moisture can vary significantly in space and time, it would be extremely difficult to specify realistic soil moisture amounts for every soil layer in every cell within a watershed. A more practical method is to specify a uniform amount of initial soil moisture for all layers and cells, and then allow these initial values to adjust to realistic levels during a “spin up” period of years prior to the simulated years of interest. By default, VELMA set the initial water content of all cells and layers to the field capacity value specified for each soil type. , i.e., when the parameter initialUniformSoilMoisture is set to its default value of -1 (if it is set to any other value, reset it to -1). |
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Not applicable | |
Min Value
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Not applicable |
Max Value
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Not applicable |
Other Value Type
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Not applicable |
Other Value
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Not applicable |
Variable Variability and Sensitivity
Initial uniform soil moisture ?Comment:Because soil moisture can vary significantly in space and time, it would be extremely difficult to specify realistic soil moisture amounts for every soil layer in every cell within a watershed. A more practical method is to specify a uniform amount of initial soil moisture for all layers and cells, and then allow these initial values to adjust to realistic levels during a “spin up” period of years prior to the simulated years of interest. By default, VELMA set the initial water content of all cells and layers to the field capacity value specified for each soil type. , i.e., when the parameter initialUniformSoilMoisture is set to its default value of -1 (if it is set to any other value, reset it to -1). |
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Variability Expression Given?
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Not recorded for Constant or Parameter Variables |
Variability Metric
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None |
Variability Value
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None |
Variability Units
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None |
Resampling Used?
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Not recorded for Constant or Parameter Variables |
Variability Expression Used in Modeling?
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Not recorded for Constant or Parameter Variables |
Variable Operational Validation (Response Variables only)
Variable ID
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Validated?
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Validation Approach (within, between, etc.)
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Validation Quality (Qual/Quant)
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Validation Method (Stat/Deviance)
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Validation Metric
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Validation Value
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Validation Units
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Use of Measured Response Data
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