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Variables Details
: (EM-944)
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EM Identity and Description
| EM-944 | |
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Document Author
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US EPA |
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Document Year
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2021 |
Variable General Info
Fine particulate matter (control scenario) ?Comment:Total fine particulate compounds emissions for the analysis year modified by the user’s emissions changes. |
Fine particulate matter (difference) ?Comment:Delta PM2.5 is the difference in ambient fine particulate matter (PM2.5) between the baseline scenario and your new scenario (the control scenario) in the year of your analysis, in units of micrograms per cubic meter (μg/m3). Note that positive values indicate a reduction in PM2.5 in the control scenario. |
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Variable ID
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23217 | 23218 |
| Control PM2.5 | Delta PM2.5 | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal | Cardinal |
| ug m^-3 | ug m^-3 |
Variable Typology
Fine particulate matter (control scenario) ?Comment:Total fine particulate compounds emissions for the analysis year modified by the user’s emissions changes. |
Fine particulate matter (difference) ?Comment:Delta PM2.5 is the difference in ambient fine particulate matter (PM2.5) between the baseline scenario and your new scenario (the control scenario) in the year of your analysis, in units of micrograms per cubic meter (μg/m3). Note that positive values indicate a reduction in PM2.5 in the control scenario. |
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Predictor-Intermediate-Response
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Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
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Predictor Variable Type
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Not applicable | Not applicable |
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Response Variable Type
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Not applicable | Not applicable |
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Data Source/Type
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Not applicable | Not applicable |
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Variable Classification Hierarchy
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4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
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--Human-caused release, presence or characteristics of polluting substances |
--Human-caused release, presence or characteristics of polluting substances |
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----Release, presence or characteristics of nonpesticide anthropogenic toxic contaminants |
----Release, presence or characteristics of nonpesticide anthropogenic toxic contaminants |
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Variable Spatial Characteristics
Fine particulate matter (control scenario) ?Comment:Total fine particulate compounds emissions for the analysis year modified by the user’s emissions changes. |
Fine particulate matter (difference) ?Comment:Delta PM2.5 is the difference in ambient fine particulate matter (PM2.5) between the baseline scenario and your new scenario (the control scenario) in the year of your analysis, in units of micrograms per cubic meter (μg/m3). Note that positive values indicate a reduction in PM2.5 in the control scenario. |
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Spatial Extent Area
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Not applicable | Not applicable |
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Spatially Distributed?
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Yes | Yes |
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Observations Spatially Patterned?
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Yes | Yes |
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Spatial Grain Type
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map scale, for cartographic feature | map scale, for cartographic feature |
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Spatial Grain Size
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user defined | user defined |
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Spatial Density
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Not applicable | Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Variable Temporal Characteristics
Fine particulate matter (control scenario) ?Comment:Total fine particulate compounds emissions for the analysis year modified by the user’s emissions changes. |
Fine particulate matter (difference) ?Comment:Delta PM2.5 is the difference in ambient fine particulate matter (PM2.5) between the baseline scenario and your new scenario (the control scenario) in the year of your analysis, in units of micrograms per cubic meter (μg/m3). Note that positive values indicate a reduction in PM2.5 in the control scenario. |
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Temporal Extent
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Not applicable | Not applicable |
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Temporally Distributed?
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No | No |
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Regular Temporal Grain?
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Not applicable | Not applicable |
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Temporal Grain Size Value
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Not applicable | Not applicable |
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Temporal Grain Size Units
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Not applicable | Not applicable |
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Temporal Density
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Not applicable | Not applicable |
Variable Values
Fine particulate matter (control scenario) ?Comment:Total fine particulate compounds emissions for the analysis year modified by the user’s emissions changes. |
Fine particulate matter (difference) ?Comment:Delta PM2.5 is the difference in ambient fine particulate matter (PM2.5) between the baseline scenario and your new scenario (the control scenario) in the year of your analysis, in units of micrograms per cubic meter (μg/m3). Note that positive values indicate a reduction in PM2.5 in the control scenario. |
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| Not applicable | Not applicable | |
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Min Value
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Not applicable | Not applicable |
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Max Value
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Not applicable | Not applicable |
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Other Value Type
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Not applicable | Not applicable |
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Other Value
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Not applicable | Not applicable |
Variable Variability and Sensitivity
Fine particulate matter (control scenario) ?Comment:Total fine particulate compounds emissions for the analysis year modified by the user’s emissions changes. |
Fine particulate matter (difference) ?Comment:Delta PM2.5 is the difference in ambient fine particulate matter (PM2.5) between the baseline scenario and your new scenario (the control scenario) in the year of your analysis, in units of micrograms per cubic meter (μg/m3). Note that positive values indicate a reduction in PM2.5 in the control scenario. |
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Variability Expression Given?
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Not applicable | Not applicable |
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Variability Metric
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None | None |
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Variability Value
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None | None |
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Variability Units
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None | None |
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Resampling Used?
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Not applicable | Not applicable |
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Variability Expression Used in Modeling?
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Not applicable | 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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