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Variables Details
: (EM-849)
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EM Identity and Description
| EM-849 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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The Natural Capital Project.org |
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Document Year
variable.detail.emDocumentYearHelp
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Variable General Info
Exposure index ?Comment:The model computes the coastal exposure index by combining the ranks of up to seven biological and physical variables (geomorphology, relief, habitats, wind exposure, wave exposure, surge, and SLR) at each shoreline point. Ranks vary from very low exposure (rank=1) to very high exposure (rank=5), based on a mixture of user- and model-defined criteria. This ranking system is based on methods proposed by Gornitz et al. (1990) and Hammar-Klose and Thieler (2001). The model calculates the exposure index EI for each shoreline point as the geometric mean of all the variable ranks (Equation 101): EI=(Rgeomorphology Rrelief Rhabitats RSLR RWindExposure RWaveExposure RSurge)1/7 where Ri represents the ranking of the ith bio-geophysical variable to calculate EI. |
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Variable ID
variable.detail.varIdHelp
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20138 |
| EI | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Qualitative (Class, Rating or Ranking) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Ordinal |
| Not applicable |
Variable Typology
Exposure index ?Comment:The model computes the coastal exposure index by combining the ranks of up to seven biological and physical variables (geomorphology, relief, habitats, wind exposure, wave exposure, surge, and SLR) at each shoreline point. Ranks vary from very low exposure (rank=1) to very high exposure (rank=5), based on a mixture of user- and model-defined criteria. This ranking system is based on methods proposed by Gornitz et al. (1990) and Hammar-Klose and Thieler (2001). The model calculates the exposure index EI for each shoreline point as the geometric mean of all the variable ranks (Equation 101): EI=(Rgeomorphology Rrelief Rhabitats RSLR RWindExposure RWaveExposure RSurge)1/7 where Ri represents the ranking of the ith bio-geophysical variable to calculate EI. |
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Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
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Response |
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Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
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Not applicable |
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Response Variable Type
variable.detail.resClassHelp
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Computed Variable |
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Data Source/Type
variable.detail.dataTypeHelp
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Not applicable |
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Variable Classification Hierarchy
variable.detail.vchLevel1Help
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
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--Ecosystem- or landscape-level metrics or indices of ecological condition, rarity or vulnerability |
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----Coastal/estuary/coral condition, rarity or vulnerability |
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Variable Spatial Characteristics
Exposure index ?Comment:The model computes the coastal exposure index by combining the ranks of up to seven biological and physical variables (geomorphology, relief, habitats, wind exposure, wave exposure, surge, and SLR) at each shoreline point. Ranks vary from very low exposure (rank=1) to very high exposure (rank=5), based on a mixture of user- and model-defined criteria. This ranking system is based on methods proposed by Gornitz et al. (1990) and Hammar-Klose and Thieler (2001). The model calculates the exposure index EI for each shoreline point as the geometric mean of all the variable ranks (Equation 101): EI=(Rgeomorphology Rrelief Rhabitats RSLR RWindExposure RWaveExposure RSurge)1/7 where Ri represents the ranking of the ith bio-geophysical variable to calculate EI. |
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Spatial Extent Area
variable.detail.spExtentHelp
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Not applicable |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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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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user defined |
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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
Exposure index ?Comment:The model computes the coastal exposure index by combining the ranks of up to seven biological and physical variables (geomorphology, relief, habitats, wind exposure, wave exposure, surge, and SLR) at each shoreline point. Ranks vary from very low exposure (rank=1) to very high exposure (rank=5), based on a mixture of user- and model-defined criteria. This ranking system is based on methods proposed by Gornitz et al. (1990) and Hammar-Klose and Thieler (2001). The model calculates the exposure index EI for each shoreline point as the geometric mean of all the variable ranks (Equation 101): EI=(Rgeomorphology Rrelief Rhabitats RSLR RWindExposure RWaveExposure RSurge)1/7 where Ri represents the ranking of the ith bio-geophysical variable to calculate EI. |
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Temporal Extent
variable.detail.tempExtentHelp
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Not applicable |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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Not applicable |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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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
variable.detail.tempGrainSizeUnitHelp
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Not applicable |
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Temporal Density
variable.detail.tempDensityHelp
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Not applicable |
Variable Values
Exposure index ?Comment:The model computes the coastal exposure index by combining the ranks of up to seven biological and physical variables (geomorphology, relief, habitats, wind exposure, wave exposure, surge, and SLR) at each shoreline point. Ranks vary from very low exposure (rank=1) to very high exposure (rank=5), based on a mixture of user- and model-defined criteria. This ranking system is based on methods proposed by Gornitz et al. (1990) and Hammar-Klose and Thieler (2001). The model calculates the exposure index EI for each shoreline point as the geometric mean of all the variable ranks (Equation 101): EI=(Rgeomorphology Rrelief Rhabitats RSLR RWindExposure RWaveExposure RSurge)1/7 where Ri represents the ranking of the ith bio-geophysical variable to calculate EI. |
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| Not applicable | |
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Min Value
variable.detail.minEstHelp
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Not applicable |
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Max Value
variable.detail.estHelp
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Not applicable |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable |
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Other Value
variable.detail.otherEstHelp
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Not applicable |
Variable Variability and Sensitivity
Exposure index ?Comment:The model computes the coastal exposure index by combining the ranks of up to seven biological and physical variables (geomorphology, relief, habitats, wind exposure, wave exposure, surge, and SLR) at each shoreline point. Ranks vary from very low exposure (rank=1) to very high exposure (rank=5), based on a mixture of user- and model-defined criteria. This ranking system is based on methods proposed by Gornitz et al. (1990) and Hammar-Klose and Thieler (2001). The model calculates the exposure index EI for each shoreline point as the geometric mean of all the variable ranks (Equation 101): EI=(Rgeomorphology Rrelief Rhabitats RSLR RWindExposure RWaveExposure RSurge)1/7 where Ri represents the ranking of the ith bio-geophysical variable to calculate EI. |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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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
variable.detail.variabilityValueHelp
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None |
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Variability Units
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None |
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Resampling Used?
variable.detail.bootstrappingHelp
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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)
| Exposure index | |
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Variable ID
variable.detail.varIdHelp
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20138 |
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Validated?
variable.detail.resValidatedHelp
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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)
variable.detail.validationQualityHelp
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None |
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Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
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None |
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Validation Metric
variable.detail.validationMetricHelp
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None |
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Validation Value
variable.detail.validationValHelp
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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
variable.detail.measuredResponseDataHelp
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None |