Environmental Data Platform

ADO Factsheet: Standardized Precipitation Index (SPI)

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The Standardised Precipitation Index (SPI) is the most commonly used index worldwide for detecting and characterising meteorological droughts. A meteorological drought is defined as a period with abnormal precipitation deficit, in relation to normal conditions for a region, represented as a long-term average. The SPI shows the normalisedanomalies (deviations from the long-term average) of the observed total precipitation for any given location and accumulation period of interest. The name of the index is usually modified to include the accumulation period. SPI-3, for example, refers to accumulation period of three months (JRC EDO, 2020).

https://doi.org/10.48784/2f51d416-d73d-4c87-80b6-c4673b4f6ce1

SPI, ADO, ADO project, Standardized Precipitation Index, ADO platform, cct, Slovenia, Italy, Europe, Austria, Hydrography, natural dynamics, natural areas, landscape, ecosystems, climate, disasters, accidents, risk, water

Eurac Research - Institute for Earth Observation
peterjames.zellner@eurac.edu


1979-01-01

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