SPEI Global Drought Monitor
Near real-time global Standardized Precipitation-Evapotranspiration Index (SPEI) drought monitor at 1-degree resolution, monthly, timescales 1-48 months, data from 1955. Downloadable as CSV and NetCDF under the Open Database License.
spei.csic.es
At a glance
- Region
- Spain (Global)
- Coverage
- Global, 1 degree
- Access
- Free
- Category
- Research Institute
- Last updated
- 2026
What's inside
- drought index
- SPEI
- gridded precipitation
- evapotranspiration
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
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: gridded precipitation
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
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
Related water data
- SPEI Global Drought Database (SPEIbase)Global | Free
- FAO WaPOR v3 Water ProductivityGlobal | Free
- A global long-term daily reanalysis of reference evapotranspiration for drought monitoringGlobal | Free
- A global multi-catchment synthesis for water fluxes and storage changesGlobal | Free
- CHELSA High-Resolution Climate DataGlobal | Free
- Copernicus Global Drought Observatory (GDO) - DownloadGlobal | Free
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