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Variables Details
: (EM-996)
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EM Identity and Description
| EM-996 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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Mulligan, M. |
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Document Year
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Variable General Info
Potential water provisioning services indices ?Comment:Water quantity in each pixel is calculated as the water balance (rainfall minus actual evapotranspiration) cumulated downstream. See Mulligan et al. (2011) for a description of the global water balance dataset. Potential water provisioning services for each cell are first calculated as the volume of clean (i.e. no 100-HFWQ) water available from upstream. The volume of water is calculated as downstream cumulated water balance based on (rainfall+fog+snowmelt)-actual evapotranspiration (WaterWorld) or rainfall (Hijmans et al., 2005) minus actual evapotranspiration (Mulligan et al. 2011) (Co$tingNature). This is the potential water service. |
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Variable ID
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24751 |
| WPS | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal |
| Not reported |
Variable Typology
Potential water provisioning services indices ?Comment:Water quantity in each pixel is calculated as the water balance (rainfall minus actual evapotranspiration) cumulated downstream. See Mulligan et al. (2011) for a description of the global water balance dataset. Potential water provisioning services for each cell are first calculated as the volume of clean (i.e. no 100-HFWQ) water available from upstream. The volume of water is calculated as downstream cumulated water balance based on (rainfall+fog+snowmelt)-actual evapotranspiration (WaterWorld) or rainfall (Hijmans et al., 2005) minus actual evapotranspiration (Mulligan et al. 2011) (Co$tingNature). This is the potential water service. |
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Predictor-Intermediate-Response
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Response |
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Predictor Variable Type
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Not applicable |
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Response Variable Type
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Computed Variable |
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Data Source/Type
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Not applicable |
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Variable Classification Hierarchy
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
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--Physical/chemical characteristics of nonliving ecosystem components |
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----Physical/chemical characteristics of water |
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------Water volume or flow in rivers or streams |
Variable Spatial Characteristics
Potential water provisioning services indices ?Comment:Water quantity in each pixel is calculated as the water balance (rainfall minus actual evapotranspiration) cumulated downstream. See Mulligan et al. (2011) for a description of the global water balance dataset. Potential water provisioning services for each cell are first calculated as the volume of clean (i.e. no 100-HFWQ) water available from upstream. The volume of water is calculated as downstream cumulated water balance based on (rainfall+fog+snowmelt)-actual evapotranspiration (WaterWorld) or rainfall (Hijmans et al., 2005) minus actual evapotranspiration (Mulligan et al. 2011) (Co$tingNature). This is the potential water service. |
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Spatial Extent Area
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Not applicable |
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Spatially Distributed?
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Yes |
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Observations Spatially Patterned?
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Yes |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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Area, for pixel or radial feature |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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Map dependent |
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Spatial Density
variable.detail.spDensityHelp
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Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Variable Temporal Characteristics
Potential water provisioning services indices ?Comment:Water quantity in each pixel is calculated as the water balance (rainfall minus actual evapotranspiration) cumulated downstream. See Mulligan et al. (2011) for a description of the global water balance dataset. Potential water provisioning services for each cell are first calculated as the volume of clean (i.e. no 100-HFWQ) water available from upstream. The volume of water is calculated as downstream cumulated water balance based on (rainfall+fog+snowmelt)-actual evapotranspiration (WaterWorld) or rainfall (Hijmans et al., 2005) minus actual evapotranspiration (Mulligan et al. 2011) (Co$tingNature). This is the potential water service. |
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Temporal Extent
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Not applicable |
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Temporally Distributed?
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No |
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Regular Temporal Grain?
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Not applicable |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not applicable |
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Temporal Grain Size Units
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Not applicable |
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Temporal Density
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Not applicable |
Variable Values
Potential water provisioning services indices ?Comment:Water quantity in each pixel is calculated as the water balance (rainfall minus actual evapotranspiration) cumulated downstream. See Mulligan et al. (2011) for a description of the global water balance dataset. Potential water provisioning services for each cell are first calculated as the volume of clean (i.e. no 100-HFWQ) water available from upstream. The volume of water is calculated as downstream cumulated water balance based on (rainfall+fog+snowmelt)-actual evapotranspiration (WaterWorld) or rainfall (Hijmans et al., 2005) minus actual evapotranspiration (Mulligan et al. 2011) (Co$tingNature). This is the potential water service. |
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| Not applicable | |
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Min Value
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Not applicable |
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Max Value
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Not applicable |
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Other Value Type
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Not applicable |
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Other Value
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Not applicable |
Variable Variability and Sensitivity
Potential water provisioning services indices ?Comment:Water quantity in each pixel is calculated as the water balance (rainfall minus actual evapotranspiration) cumulated downstream. See Mulligan et al. (2011) for a description of the global water balance dataset. Potential water provisioning services for each cell are first calculated as the volume of clean (i.e. no 100-HFWQ) water available from upstream. The volume of water is calculated as downstream cumulated water balance based on (rainfall+fog+snowmelt)-actual evapotranspiration (WaterWorld) or rainfall (Hijmans et al., 2005) minus actual evapotranspiration (Mulligan et al. 2011) (Co$tingNature). This is the potential water service. |
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Variability Expression Given?
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Not applicable |
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Variability Metric
variable.detail.variabilityMetricHelp
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None |
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Variability Value
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None |
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Variability Units
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None |
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Resampling Used?
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Not applicable |
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Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
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Not applicable |
Variable Operational Validation (Response Variables only)
| Potential water provisioning services indices | |
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Variable ID
variable.detail.varIdHelp
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24751 |
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Validated?
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Not applicable |
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Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
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None |
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Validation Quality (Qual/Quant)
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None |
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Validation Method (Stat/Deviance)
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None |
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Validation Metric
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None |
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Validation Value
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None |
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Validation Units
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None |
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Use of Measured Response Data
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None |