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: (EM-849)
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EM Identity and Description
| EM-849 | |
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Document Author
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The Natural Capital Project.org |
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Document Year
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Variable General Info
Weighted average power (locally generated wind-waves) ?Comment:For locally wind-generated waves, Elw is computed as (Equation 109): Elw=∑k=H[Fk]PlkOlk where H[Fk] is the opposite of the definition in (107), meaning Elw will only accumulate along rays that do not reach max fetch distance. Elw is the sum over the 16 wind sectors of the wave power generated by the average of the highest 10% wind speed values Plk that propagate in the direction k, weighted by the percent occurrence Olk of these strong wind in that sector. |
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Variable ID
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20127 |
| E^lw | |
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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 |
| kW m^-1 |
Variable Typology
Weighted average power (locally generated wind-waves) ?Comment:For locally wind-generated waves, Elw is computed as (Equation 109): Elw=∑k=H[Fk]PlkOlk where H[Fk] is the opposite of the definition in (107), meaning Elw will only accumulate along rays that do not reach max fetch distance. Elw is the sum over the 16 wind sectors of the wave power generated by the average of the highest 10% wind speed values Plk that propagate in the direction k, weighted by the percent occurrence Olk of these strong wind in that sector. |
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Predictor-Intermediate-Response
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Intermediate (Computed) Variable |
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Predictor Variable Type
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Not applicable |
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Response Variable Type
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Not applicable |
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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 coastal aquatic systems |
Variable Spatial Characteristics
Weighted average power (locally generated wind-waves) ?Comment:For locally wind-generated waves, Elw is computed as (Equation 109): Elw=∑k=H[Fk]PlkOlk where H[Fk] is the opposite of the definition in (107), meaning Elw will only accumulate along rays that do not reach max fetch distance. Elw is the sum over the 16 wind sectors of the wave power generated by the average of the highest 10% wind speed values Plk that propagate in the direction k, weighted by the percent occurrence Olk of these strong wind in that sector. |
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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
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area, for pixel or radial feature |
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Spatial Grain Size
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user defined |
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Spatial Density
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Not applicable |
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EnviroAtlas URL
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National Hydrography Dataset Plus (NHD PlusV2) |
Variable Temporal Characteristics
Weighted average power (locally generated wind-waves) ?Comment:For locally wind-generated waves, Elw is computed as (Equation 109): Elw=∑k=H[Fk]PlkOlk where H[Fk] is the opposite of the definition in (107), meaning Elw will only accumulate along rays that do not reach max fetch distance. Elw is the sum over the 16 wind sectors of the wave power generated by the average of the highest 10% wind speed values Plk that propagate in the direction k, weighted by the percent occurrence Olk of these strong wind in that sector. |
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Temporal Extent
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Not applicable |
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Temporally Distributed?
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Not applicable |
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Regular Temporal Grain?
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Not applicable |
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Temporal Grain Size Value
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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
Weighted average power (locally generated wind-waves) ?Comment:For locally wind-generated waves, Elw is computed as (Equation 109): Elw=∑k=H[Fk]PlkOlk where H[Fk] is the opposite of the definition in (107), meaning Elw will only accumulate along rays that do not reach max fetch distance. Elw is the sum over the 16 wind sectors of the wave power generated by the average of the highest 10% wind speed values Plk that propagate in the direction k, weighted by the percent occurrence Olk of these strong wind in that sector. |
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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
Weighted average power (locally generated wind-waves) ?Comment:For locally wind-generated waves, Elw is computed as (Equation 109): Elw=∑k=H[Fk]PlkOlk where H[Fk] is the opposite of the definition in (107), meaning Elw will only accumulate along rays that do not reach max fetch distance. Elw is the sum over the 16 wind sectors of the wave power generated by the average of the highest 10% wind speed values Plk that propagate in the direction k, weighted by the percent occurrence Olk of these strong wind in that sector. |
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Variability Expression Given?
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Not applicable |
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Variability Metric
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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?
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Not applicable |
Variable Operational Validation (Response Variables only)
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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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