Standardized Precipitation Evapotranspiration Index (SPEI)
This index can be used to determine and characterize meteorological, hydrological and agricultural drought hazards on a monthly basis. (source WMO and GWP, 2016)
Simple
- Date (Publication)
- Date
- Presentation form
- Digital map
- Purpose
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Mapping meteorological drought hazard, Mapping hydrological drought hazard, Mapping agricultural drought hazard
- Credit
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N/A
- Maintenance and update frequency
- Daily
- Update scope
- Indices
- Theme
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Type: Indices
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Type of Drought: Meteorological, Agricultural, Hydrological Drought
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Application: Mapping meteorological drought hazard, Mapping hydrological drought hazard, Mapping agricultural drought hazard
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Extent: Not relevant
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- Use limitation
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Monthly precipitation and temperature data. A serially complete record of data is required with no missing months.
- Access constraints
- Intellectual property rights
- Use constraints
- Other restrictions
- Date
- Spatial representation type
- Vector
Spatial resolution
- Distance
- Aggregation period: N/A
- Distance
- Spatial scale: Not relevant
Spatial resolution
- Metadata language
-
eng
- Description
-
Not relevant
))
- Begin date
- Not relevant
- End date
- Not relevant
- Date (Revision)
- Reference system identifier
- EPSG / Spatial_reference / 7.9
- Distribution format
-
-
(
Various
)
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(
Various
)
- OnLine resource
- http://www.droughtmanagement.info/indices/
- Hierarchy level
- Series
- Description
-
Not relevant
Temporal Extent
Vertical extent
- Dataset
-
Mapping meteorological drought hazard, Mapping hydrological drought hazard, Mapping agricultural drought hazard
Non quantitative attribute accuracy
- Measure description
-
N/A
- Evaluation Method
- Direct internal
Conformance result
- Date (Revision)
- Pass
Conformance result
- Date
Completeness omission
- Name of measure
-
Codelist omission
- Evaluation Method
- Direct internal
Conformance result
- Date (Revision)
- Pass
- Statement
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Data requirements to use: Monthly precipitation and temperature data. A serially complete record of data is required with no missing months.;
Data used: N/A;
Data format: N/A;
Data access: N/A;
Concise description:
As a relatively new drought index, SPEI uses the basis of SPI but includes a temperature component, allowing the index to account for the effect of temperature on drought development through a basic water balance calculation. SPEI has an intensity scale in which both positive and negative values are calculated, identifying wet and dry events. It can be calculated for time steps of as little as 1 month up to 48 months or more. Monthly updates allow it to be used operationally, and the longer the time series of data available, the more robust the results will be.
- File identifier
- b4a33b88-fab5-4971-8379-af08c02f54ba XML
- Metadata language
-
eng
- Character set
- UTF8
- Hierarchy level
- Indices
- Hierarchy level name
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Standardized Precipitation Evapotranspiration Index (SPEI)
- Date stamp
- 2022-02-07T11:04:19
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
-
1.0
- Dataset URI
Overviews
Spatial extent
Provided by
