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DataBank

Metadata Glossary

CodeEN.CLC.SPEI.XD
Indicator NameStandardised Precipitation-Evapotranspiration Index
Long definitionThe SPEI fulfills the requirements of a drought index since its multi-scalar character enables it to be used by different scientific disciplines to detect, monitor, and analyze droughts. Like the sc-PDSI and the SPI, the SPEI can measure drought severity according to its intensity and duration, and can identify the onset and end of drought episodes. The SPEI allows comparison of drought severity through time and space, since it can be calculated over a wide range of climates, as can the SPI.
SourceGlobal SPEI database (SPEIbase). https://spei.csic.es/database.html
TopicEnvironment: Environment/climate risk & resilience
PeriodicityAnnual
Statistical concept and methodologyThe Global SPEI database, SPEIbase, offers long-time, robust information about drought conditions at the global scale, with a 0.5 degrees spatial resolution and a monthly time resolution. It has a multi-scale character, providing SPEI time-scales between 1 and 48 months.
Other notesThe data presented in the Sovereign ESG Data Portal is the 12-month time-scale.
License URLhttps://datacatalog.worldbank.org/public-licenses#cc-by
License TypeCC BY-4.0
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