SPEI Global Drought Database (SPEIbase)
Global 0.5-degree gridded Standardized Precipitation-Evapotranspiration Index database (SPEIbase v2.x) covering 1901 to present, with multi-scale time windows from 1 to 48 months. Built by CSIC (Spanish National Research Council) using CRU TS data. Downloadable NetCDF files under Open Database License.
spei.csic.es
At a glance
- Region
- Spain (Global)
- Coverage
- Global
- Access
- Free
- Category
- Research Institute
- Last updated
- 2025
What's inside
- Drought index
- SPEI
- Gridded climate
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Drought indices
Track SPI and SPEI style indices for declarations and relief.
Because it has: Drought index
- 02
Planning
Plan reservoir releases and cropping for a dry year.
- 03
Risk screening
Screen projects and assets for climate risk.
Because it has: Gridded climate
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Onset forecasts
Predict drought onset months ahead from climate signals.
- 02
One risk score
Combine many indices into a single, explainable risk score.
- 03
Bias correction
Correct and downscale climate model output for a site.
Related water data
- SPEI Global Drought MonitorGlobal | Free
- CRU scPDSI Drought IndicesGlobal | Free
- APDRC CPC Global Daily PrecipitationGlobal | Free
- Copernicus Global Drought Observatory (GDO) - DownloadGlobal | Free
- CRU TS4.08 Gridded Climate Time Series (CEDA)Global | Free
- Global Drought Hazard dataset (ENERGYDATA.INFO)Global | Free
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