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Variables Details
: (EM-938)
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EM Identity and Description
| EM-938 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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Eslinger, David L., H. Jamieson Carter, Matt Pendleton, Shan Burkhalter, Margaret Allen |
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Document Year
variable.detail.emDocumentYearHelp
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2012 |
Variable General Info
Elevation ?Comment:Elevation data, or digital elevation models, determine flow direction, slope, and other parameters. These derived data products are created automatically and are used in the runoff and erosion algorithms. |
Land cover ?Comment:Land cover is used to estimate pollutant loads by applying coefficients for each pollutant to each land cover class. An excellent source for land cover is NOAA’s Coastal Services Center Coastal Change Analysis Program (C-CAP). Data are available at 30-meter resolution for the nation’s coastal areas. Inland land cover data at 30-meter resolution are available from the National Land Cover Database (NLCD). OpenNSPECT contains default pollutant coefficients for both products. |
Precipitation ?Comment:Precipitation data are used in the Soil Conservation Service (SCS) runoff algorithm. OpenNSPECT can calculate both event and annual runoff scenarios. For annual runoff scenarios, users must also estimate the number of days that yielded surface runoff within a year. A good source for these data is the PRISM Climate Group at Oregon State University, which also provides access to a suite of climate maps that are available at a variety of spatial and temporal scales for the conterminous United States. These products were created using the Parameter ‒ elevation Regressions on Independent Slopes Model (PRISM) climate-mapping system. |
Rainfall runoff erosivity ?Comment:The rainfall-runoff erosivity factor (R-factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Universal Soil Loss Equation to estimate annual rates of erosion. When including erosion prediction in OpenNSPECT analysis, the R-factor can be input as a raster file or a constant value. R-factor raster data for the coterminous United States and six of the main Hawaiian Islands are available from the NOAA Coastal Services Center. For areas not covered by these data, a method to calculate R-factor is described in chapter 2 of the USDA Handbook Number 703 (Wischmeier and Smith, 1978). |
Soil type ?Comment:Two characteristics of soils are needed to run OpenNSPECT: infiltration capacity and erodibility. Both hydrologic soil groups and K-factors are attributes in the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey database. Select the soils configuration that will be used in the analysis. The drop-down list contains all currently defined soil configurations. |
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Variable ID
variable.detail.varIdHelp
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23093 | 23092 | 23106 | 23108 | 23094 |
| Not reported | Not reported | Not reported | R | Not reported | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal | Non-Ordinal | Cardinal | Cardinal | Non-Ordinal |
| m | Not applicable | cm | (ft*tonft*in) / (ac*hr*yr) | Not applicable |
Variable Typology
Elevation ?Comment:Elevation data, or digital elevation models, determine flow direction, slope, and other parameters. These derived data products are created automatically and are used in the runoff and erosion algorithms. |
Land cover ?Comment:Land cover is used to estimate pollutant loads by applying coefficients for each pollutant to each land cover class. An excellent source for land cover is NOAA’s Coastal Services Center Coastal Change Analysis Program (C-CAP). Data are available at 30-meter resolution for the nation’s coastal areas. Inland land cover data at 30-meter resolution are available from the National Land Cover Database (NLCD). OpenNSPECT contains default pollutant coefficients for both products. |
Precipitation ?Comment:Precipitation data are used in the Soil Conservation Service (SCS) runoff algorithm. OpenNSPECT can calculate both event and annual runoff scenarios. For annual runoff scenarios, users must also estimate the number of days that yielded surface runoff within a year. A good source for these data is the PRISM Climate Group at Oregon State University, which also provides access to a suite of climate maps that are available at a variety of spatial and temporal scales for the conterminous United States. These products were created using the Parameter ‒ elevation Regressions on Independent Slopes Model (PRISM) climate-mapping system. |
Rainfall runoff erosivity ?Comment:The rainfall-runoff erosivity factor (R-factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Universal Soil Loss Equation to estimate annual rates of erosion. When including erosion prediction in OpenNSPECT analysis, the R-factor can be input as a raster file or a constant value. R-factor raster data for the coterminous United States and six of the main Hawaiian Islands are available from the NOAA Coastal Services Center. For areas not covered by these data, a method to calculate R-factor is described in chapter 2 of the USDA Handbook Number 703 (Wischmeier and Smith, 1978). |
Soil type ?Comment:Two characteristics of soils are needed to run OpenNSPECT: infiltration capacity and erodibility. Both hydrologic soil groups and K-factors are attributes in the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey database. Select the soils configuration that will be used in the analysis. The drop-down list contains all currently defined soil configurations. |
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Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
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Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
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Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
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Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
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Response Variable Type
variable.detail.resClassHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Data Source/Type
variable.detail.dataTypeHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Variable Classification Hierarchy
variable.detail.vchLevel1Help
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2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
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--Geographic position, horizontal or vertical |
--Land use/land cover type or dominant habitat type |
--Physical/chemical characteristics of nonliving ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
--Dominant soil or substrate type |
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----Elevation, altitude, bathymetry |
----Other, multiple, unspecified or unclear |
----Physical/chemical characteristics of air, meteorology and precipitation |
----Physical/chemical characteristics of air, meteorology and precipitation |
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------Meteorology data and parameters (including precipitation) |
------Meteorology data and parameters (including precipitation) |
Variable Spatial Characteristics
Elevation ?Comment:Elevation data, or digital elevation models, determine flow direction, slope, and other parameters. These derived data products are created automatically and are used in the runoff and erosion algorithms. |
Land cover ?Comment:Land cover is used to estimate pollutant loads by applying coefficients for each pollutant to each land cover class. An excellent source for land cover is NOAA’s Coastal Services Center Coastal Change Analysis Program (C-CAP). Data are available at 30-meter resolution for the nation’s coastal areas. Inland land cover data at 30-meter resolution are available from the National Land Cover Database (NLCD). OpenNSPECT contains default pollutant coefficients for both products. |
Precipitation ?Comment:Precipitation data are used in the Soil Conservation Service (SCS) runoff algorithm. OpenNSPECT can calculate both event and annual runoff scenarios. For annual runoff scenarios, users must also estimate the number of days that yielded surface runoff within a year. A good source for these data is the PRISM Climate Group at Oregon State University, which also provides access to a suite of climate maps that are available at a variety of spatial and temporal scales for the conterminous United States. These products were created using the Parameter ‒ elevation Regressions on Independent Slopes Model (PRISM) climate-mapping system. |
Rainfall runoff erosivity ?Comment:The rainfall-runoff erosivity factor (R-factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Universal Soil Loss Equation to estimate annual rates of erosion. When including erosion prediction in OpenNSPECT analysis, the R-factor can be input as a raster file or a constant value. R-factor raster data for the coterminous United States and six of the main Hawaiian Islands are available from the NOAA Coastal Services Center. For areas not covered by these data, a method to calculate R-factor is described in chapter 2 of the USDA Handbook Number 703 (Wischmeier and Smith, 1978). |
Soil type ?Comment:Two characteristics of soils are needed to run OpenNSPECT: infiltration capacity and erodibility. Both hydrologic soil groups and K-factors are attributes in the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey database. Select the soils configuration that will be used in the analysis. The drop-down list contains all currently defined soil configurations. |
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Spatial Extent Area
variable.detail.spExtentHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes | Yes | Yes | Yes | Yes |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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Yes | Yes | Yes | Yes | Yes |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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area, for pixel or radial feature | area, for pixel or radial feature | area, for pixel or radial feature | area, for pixel or radial feature | area, for pixel or radial feature |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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30 m | 30 m | 800 m | 30 m | 30 m |
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Spatial Density
variable.detail.spDensityHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Average Annual Precipitation | Average Annual Precipitation |
Variable Temporal Characteristics
Elevation ?Comment:Elevation data, or digital elevation models, determine flow direction, slope, and other parameters. These derived data products are created automatically and are used in the runoff and erosion algorithms. |
Land cover ?Comment:Land cover is used to estimate pollutant loads by applying coefficients for each pollutant to each land cover class. An excellent source for land cover is NOAA’s Coastal Services Center Coastal Change Analysis Program (C-CAP). Data are available at 30-meter resolution for the nation’s coastal areas. Inland land cover data at 30-meter resolution are available from the National Land Cover Database (NLCD). OpenNSPECT contains default pollutant coefficients for both products. |
Precipitation ?Comment:Precipitation data are used in the Soil Conservation Service (SCS) runoff algorithm. OpenNSPECT can calculate both event and annual runoff scenarios. For annual runoff scenarios, users must also estimate the number of days that yielded surface runoff within a year. A good source for these data is the PRISM Climate Group at Oregon State University, which also provides access to a suite of climate maps that are available at a variety of spatial and temporal scales for the conterminous United States. These products were created using the Parameter ‒ elevation Regressions on Independent Slopes Model (PRISM) climate-mapping system. |
Rainfall runoff erosivity ?Comment:The rainfall-runoff erosivity factor (R-factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Universal Soil Loss Equation to estimate annual rates of erosion. When including erosion prediction in OpenNSPECT analysis, the R-factor can be input as a raster file or a constant value. R-factor raster data for the coterminous United States and six of the main Hawaiian Islands are available from the NOAA Coastal Services Center. For areas not covered by these data, a method to calculate R-factor is described in chapter 2 of the USDA Handbook Number 703 (Wischmeier and Smith, 1978). |
Soil type ?Comment:Two characteristics of soils are needed to run OpenNSPECT: infiltration capacity and erodibility. Both hydrologic soil groups and K-factors are attributes in the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey database. Select the soils configuration that will be used in the analysis. The drop-down list contains all currently defined soil configurations. |
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Temporal Extent
variable.detail.tempExtentHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Density
variable.detail.tempDensityHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Values
Elevation ?Comment:Elevation data, or digital elevation models, determine flow direction, slope, and other parameters. These derived data products are created automatically and are used in the runoff and erosion algorithms. |
Land cover ?Comment:Land cover is used to estimate pollutant loads by applying coefficients for each pollutant to each land cover class. An excellent source for land cover is NOAA’s Coastal Services Center Coastal Change Analysis Program (C-CAP). Data are available at 30-meter resolution for the nation’s coastal areas. Inland land cover data at 30-meter resolution are available from the National Land Cover Database (NLCD). OpenNSPECT contains default pollutant coefficients for both products. |
Precipitation ?Comment:Precipitation data are used in the Soil Conservation Service (SCS) runoff algorithm. OpenNSPECT can calculate both event and annual runoff scenarios. For annual runoff scenarios, users must also estimate the number of days that yielded surface runoff within a year. A good source for these data is the PRISM Climate Group at Oregon State University, which also provides access to a suite of climate maps that are available at a variety of spatial and temporal scales for the conterminous United States. These products were created using the Parameter ‒ elevation Regressions on Independent Slopes Model (PRISM) climate-mapping system. |
Rainfall runoff erosivity ?Comment:The rainfall-runoff erosivity factor (R-factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Universal Soil Loss Equation to estimate annual rates of erosion. When including erosion prediction in OpenNSPECT analysis, the R-factor can be input as a raster file or a constant value. R-factor raster data for the coterminous United States and six of the main Hawaiian Islands are available from the NOAA Coastal Services Center. For areas not covered by these data, a method to calculate R-factor is described in chapter 2 of the USDA Handbook Number 703 (Wischmeier and Smith, 1978). |
Soil type ?Comment:Two characteristics of soils are needed to run OpenNSPECT: infiltration capacity and erodibility. Both hydrologic soil groups and K-factors are attributes in the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey database. Select the soils configuration that will be used in the analysis. The drop-down list contains all currently defined soil configurations. |
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| Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | |
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Min Value
variable.detail.minEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Max Value
variable.detail.estHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Other Value
variable.detail.otherEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Variability and Sensitivity
Elevation ?Comment:Elevation data, or digital elevation models, determine flow direction, slope, and other parameters. These derived data products are created automatically and are used in the runoff and erosion algorithms. |
Land cover ?Comment:Land cover is used to estimate pollutant loads by applying coefficients for each pollutant to each land cover class. An excellent source for land cover is NOAA’s Coastal Services Center Coastal Change Analysis Program (C-CAP). Data are available at 30-meter resolution for the nation’s coastal areas. Inland land cover data at 30-meter resolution are available from the National Land Cover Database (NLCD). OpenNSPECT contains default pollutant coefficients for both products. |
Precipitation ?Comment:Precipitation data are used in the Soil Conservation Service (SCS) runoff algorithm. OpenNSPECT can calculate both event and annual runoff scenarios. For annual runoff scenarios, users must also estimate the number of days that yielded surface runoff within a year. A good source for these data is the PRISM Climate Group at Oregon State University, which also provides access to a suite of climate maps that are available at a variety of spatial and temporal scales for the conterminous United States. These products were created using the Parameter ‒ elevation Regressions on Independent Slopes Model (PRISM) climate-mapping system. |
Rainfall runoff erosivity ?Comment:The rainfall-runoff erosivity factor (R-factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Universal Soil Loss Equation to estimate annual rates of erosion. When including erosion prediction in OpenNSPECT analysis, the R-factor can be input as a raster file or a constant value. R-factor raster data for the coterminous United States and six of the main Hawaiian Islands are available from the NOAA Coastal Services Center. For areas not covered by these data, a method to calculate R-factor is described in chapter 2 of the USDA Handbook Number 703 (Wischmeier and Smith, 1978). |
Soil type ?Comment:Two characteristics of soils are needed to run OpenNSPECT: infiltration capacity and erodibility. Both hydrologic soil groups and K-factors are attributes in the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey database. Select the soils configuration that will be used in the analysis. The drop-down list contains all currently defined soil configurations. |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Variability Metric
variable.detail.variabilityMetricHelp
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None | None | None | None | None |
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Variability Value
variable.detail.variabilityValueHelp
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None | None | None | None | None |
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Variability Units
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None | None | None | None | None |
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Resampling Used?
variable.detail.bootstrappingHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Operational Validation (Response Variables only)
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Variable ID
variable.detail.varIdHelp
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Validated?
variable.detail.resValidatedHelp
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Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
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Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
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Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
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Validation Metric
variable.detail.validationMetricHelp
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Validation Value
variable.detail.validationValHelp
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Validation Units
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Use of Measured Response Data
variable.detail.measuredResponseDataHelp
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