Published by U.S. National Oceanic and Atmospheric Administration (NOAA) and served through the base Google Data Commons graph, which handles the ingestion and standardization. Follow the links for the authoritative definitions and the exact processing code.
| Variable | Source table |
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Area of Drought Event
Area of drought event.
Population drought eventMeasured areaStatistic measured value
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Droughts
Count of drought event.
Population drought eventMeasured countStatistic measured value
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Standardized Precipitation Index: Month 1
Standardized precipitation index of atmosphere (month 1).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 1
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Standardized Precipitation Index: Month 3
Standardized precipitation index of atmosphere (month 3).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 3
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Standardized Precipitation Index: Month 36
Standardized precipitation index of atmosphere (month 36).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 36
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Standardized Precipitation Index: Month 6
Standardized precipitation index of atmosphere (month 6).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 6
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Standardized Precipitation Index: Month 72
Standardized precipitation index of atmosphere (month 72).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 72
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Standardized Precipitation Index: Month 9
Standardized precipitation index of atmosphere (month 9).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 9
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