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Sources  ›  GPCC Monthly SPI Data

GPCC Monthly SPI Data

License
Public domain
Coverage
1900–2025 · Base Data Commons graph
Updates
Monthly

Source & methodology

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.

Variables (8)

VariableSource table
Area of Drought Event
Area of drought event.
Population drought eventMeasured areaStatistic measured value
Droughts
Count of drought event.
Population drought eventMeasured countStatistic measured value
Standardized Precipitation Index: Month 1
Standardized precipitation index of atmosphere (month 1).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 1
Standardized Precipitation Index: Month 3
Standardized precipitation index of atmosphere (month 3).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 3
Standardized Precipitation Index: Month 36
Standardized precipitation index of atmosphere (month 36).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 36
Standardized Precipitation Index: Month 6
Standardized precipitation index of atmosphere (month 6).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 6
Standardized Precipitation Index: Month 72
Standardized precipitation index of atmosphere (month 72).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 72
Standardized Precipitation Index: Month 9
Standardized precipitation index of atmosphere (month 9).
Population atmosphereMeasured standardized precipitation indexStatistic measured valueaccumulation period month 9