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Variables Details
: (EM-91)
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| EM-91 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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Tran, L. T., O’Neill, R. V., Smith, E. R., Bruins, R. J. F. and Harden, C. |
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Document Year
variable.detail.emDocumentYearHelp
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2013 |
| Land cover class | Nitrogen point source addition rates (industrial & domestic) | Precipitation | Soil permeability | Stream Class | Stream density | Stream flow | Temperature (air) | |
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Variable ID
variable.detail.varIdHelp
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13518 | 1278 | 13489 | 13488 | 13782 | 13519 | 1271 | 13490 |
| Not applicable | Not applicable | not reported | Not reported | Not reported | Not reported | Qi | Not reported | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Qualitative (Class, Rating or Ranking) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Non-Ordinal | Cardinal | Cardinal | Cardinal | Ordinal | Cardinal | Cardinal | Cardinal |
| Not applicable | kg/year | Not reported | Not reported | Not applicable | Not reported | m^3/sec | Not reported |
| Land cover class | Nitrogen point source addition rates (industrial & domestic) | Precipitation | Soil permeability | Stream Class | Stream density | Stream flow | Temperature (air) | |
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Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
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Predictor |
Predictor |
Predictor |
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 |
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 | Not applicable | Not applicable | Not applicable |
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Data Source/Type
variable.detail.dataTypeHelp
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Map or database (e.g., wide coverage, wide availability, measured or modeled) ?Comment:National Land Cover Dataset of 1992 from the Multi-Resolution Land Characteristics (MRLC) initiative (Vogelmann et al. 2001) |
Map or database (e.g., wide coverage, wide availability, measured or modeled) ?Comment:USGS County-Level Point-Source data for the US (http://water.usgs.gov/nawqa/sparrow/wrr97/point/point.html) |
Map or database (e.g., wide coverage, wide availability, measured or modeled) ?Comment:NHDplus dataset; derived from PRISM, 2.5-min resolution data by Daly and Taylor (1998). |
Map or database (e.g., wide coverage, wide availability, measured or modeled) ?Comment:USGS Soils Data for the Conterminous Unite States; derived from the NRCS State Soil Geographic (STATSGO) database. Rasterized at 30m resolution |
Map or database (e.g., wide coverage, wide availability, measured or modeled) | Map or database (e.g., wide coverage, wide availability, measured or modeled) | Map or database (e.g., wide coverage, wide availability, measured or modeled) | Map or database (e.g., wide coverage, wide availability, measured or modeled) |
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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 |
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 |
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 |
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--Land use/land cover type or dominant habitat type |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
--Demarcation of watershed, channel, floodplain, shore, coastline, flowline |
--Demarcation of watershed, channel, floodplain, shore, coastline, flowline |
--Physical/chemical characteristics of nonliving ecosystem components |
--Physical/chemical characteristics of nonliving ecosystem components |
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----Other, multiple, unspecified or unclear |
----Nitrogen-related characteristics of ecosystem components |
----Physical/chemical characteristics of air, meteorology and precipitation |
----Physical/chemical characteristics of soils, substrates, rocks |
----Flowline demarcation or dimension |
----Flowline demarcation or dimension |
----Physical/chemical characteristics of water |
----Physical/chemical characteristics of air, meteorology and precipitation |
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------Reactive nitrogen accumulation or attenuation by terrestrial or aquatic ecosystem components |
------Meteorology data and parameters (including precipitation) |
------Soil hydrologic characteristics |
------Water volume or flow in rivers or streams |
------Meteorology data and parameters (including precipitation) |
| Land cover class | Nitrogen point source addition rates (industrial & domestic) | Precipitation | Soil permeability | Stream Class | Stream density | Stream flow | Temperature (air) | |
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Spatial Extent Area
variable.detail.spExtentHelp
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100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 | 100,000-1,000,000 km^2 |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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Yes | Yes | Yes | 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 | NHDplus v1 | NHDplus v1 | Area, for pixel or radial feature | NHDplus v1 | NHDplus v1 | NHDplus v1 | NHDplus v1 |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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Not reported | Not applicable |
4 km ?Comment:Derived from the PRISM, 2.5-min (approx 4 km) resolution data |
30m x 30m pixel | NHDplus v1 | NHDplus v1 | Not applicable |
4 km ?Comment:Derived from the PRISM, 2.5-min (approx. 4km) resolution data |
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Spatial Density
variable.detail.spDensityHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Total Annual Reduced Nitrogen Deposition | Average Annual Precipitation | The National Hydrography Dataset (NHD) | The National Hydrography Dataset (NHD) | National Hydrography Dataset Plus (NHD PlusV2) | Average Annual Precipitation |
| Land cover class | Nitrogen point source addition rates (industrial & domestic) | Precipitation | Soil permeability | Stream Class | Stream density | Stream flow | Temperature (air) | |
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Temporal Extent
variable.detail.tempExtentHelp
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1992 | 1977-1981 | 1987-1997 | 1987-1997 | 1987-1997 | 2006 | Not applicable | 1987-1997 |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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No | No | Not applicable | Not applicable | Not applicable | Not applicable | No | Yes |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | No |
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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 | 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 | 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 | Not applicable | Not applicable | Not applicable |
| Land cover class | Nitrogen point source addition rates (industrial & domestic) | Precipitation | Soil permeability | Stream Class | Stream density | Stream flow | Temperature (air) | |
| Not applicable | Not reported | Not reported | Not reported | Not applicable | Not reported | Not reported | Not reported | |
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Min Value
variable.detail.minEstHelp
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Not applicable | Not reported | Not reported | Not reported | Not applicable | Not reported | Not reported | Not reported |
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Max Value
variable.detail.estHelp
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Not applicable | Not reported | Not reported | Not reported | Not applicable | Not reported | Not reported | Not reported |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable | Not applicable | Not applicable | 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 reported | Not reported | Not reported | Not applicable | Not reported | Not reported | Not reported |
| Land cover class | Nitrogen point source addition rates (industrial & domestic) | Precipitation | Soil permeability | Stream Class | Stream density | Stream flow | Temperature (air) | |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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Not applicable | No | No | No | Not applicable | No | No | No |
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Variability Metric
variable.detail.variabilityMetricHelp
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None | None | None | None | None | None | None | None |
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Variability Value
variable.detail.variabilityValueHelp
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None | None | None | None | None | None | None | None |
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Variability Units
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None | None | None | 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 | 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 | Not applicable | Not applicable | Not applicable |
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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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