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Variables Details
: (EM-876)
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EM Identity and Description
| EM-876 | |
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Document Author
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Brown, S. C., J. Lombard, K. Wang, M. M. Byrne, M. Toro, E. Plater-Zyberk, D. J. Feaster, J. Kardys, M. I. Nardi, G. Perez-Gomez, H. M. Pantin, and J. Szapocznik |
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Document Year
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2016 |
Variable General Info
Neighborhood greenness (vegetative presence measured by Normalized Difference Vegetatation Index (NDVI)) ?Comment:The U.S. National Aeronautics and Space Administration Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite imagery at a 15 x 15-meter spatial resolution was used to calculate greenness or vegetative presence by Normalized Difference Vegetation Index (NDVI), with continuous measurements that ranged from to -1, with higher values indicating more greenness. |
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Variable ID
variable.detail.varIdHelp
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20740 |
| Not reported | |
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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 |
| unitless (1 to -1) |
Variable Typology
Neighborhood greenness (vegetative presence measured by Normalized Difference Vegetatation Index (NDVI)) ?Comment:The U.S. National Aeronautics and Space Administration Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite imagery at a 15 x 15-meter spatial resolution was used to calculate greenness or vegetative presence by Normalized Difference Vegetation Index (NDVI), with continuous measurements that ranged from to -1, with higher values indicating more greenness. |
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Predictor-Intermediate-Response
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Predictor |
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Predictor Variable Type
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Time- or Space-varying Variable |
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Response Variable Type
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Not applicable |
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Data Source/Type
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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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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
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--Biological characteristics, processes or requirements of living ecosystem components |
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----Biological characteristics, processes or requirements of flora and fungi |
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------Cover characteristics (canopy cover, herbaceous cover or leaf area) |
Variable Spatial Characteristics
Neighborhood greenness (vegetative presence measured by Normalized Difference Vegetatation Index (NDVI)) ?Comment:The U.S. National Aeronautics and Space Administration Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite imagery at a 15 x 15-meter spatial resolution was used to calculate greenness or vegetative presence by Normalized Difference Vegetation Index (NDVI), with continuous measurements that ranged from to -1, with higher values indicating more greenness. |
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Spatial Extent Area
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1000-10,000 km^2. |
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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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15m x 15m |
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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
Neighborhood greenness (vegetative presence measured by Normalized Difference Vegetatation Index (NDVI)) ?Comment:The U.S. National Aeronautics and Space Administration Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite imagery at a 15 x 15-meter spatial resolution was used to calculate greenness or vegetative presence by Normalized Difference Vegetation Index (NDVI), with continuous measurements that ranged from to -1, with higher values indicating more greenness. |
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Temporal Extent
variable.detail.tempExtentHelp
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2011 |
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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
variable.detail.tempDensityHelp
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Not applicable |
Variable Values
Neighborhood greenness (vegetative presence measured by Normalized Difference Vegetatation Index (NDVI)) ?Comment:The U.S. National Aeronautics and Space Administration Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite imagery at a 15 x 15-meter spatial resolution was used to calculate greenness or vegetative presence by Normalized Difference Vegetation Index (NDVI), with continuous measurements that ranged from to -1, with higher values indicating more greenness. |
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| Not reported | |
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Min Value
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Not reported |
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Max Value
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Not reported |
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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 reported |
Variable Variability and Sensitivity
Neighborhood greenness (vegetative presence measured by Normalized Difference Vegetatation Index (NDVI)) ?Comment:The U.S. National Aeronautics and Space Administration Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite imagery at a 15 x 15-meter spatial resolution was used to calculate greenness or vegetative presence by Normalized Difference Vegetation Index (NDVI), with continuous measurements that ranged from to -1, with higher values indicating more greenness. |
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Variability Expression Given?
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No |
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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?
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)
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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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