IRI/LDEO Climate Data Library
Columbia University IRI/LDEO Climate Data Library: hundreds of terabytes of gridded climate datasets (CHIRPS v3, GPCC, CMAP, reanalyses) browsable, analyzable and downloadable, with full OPeNDAP programmatic access.
iridl.ldeo.columbia.edu
At a glance
- Region
- United States (Global)
- Coverage
- Multi-dataset, varies
- Access
- Free
- Category
- Academic
- Last updated
- 2026
What's inside
- Precipitation
- Climate reanalysis
- Gridded climate
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Risk screening
Screen projects and assets for climate risk.
Because it has: Climate reanalysis
- 02
Future water
Estimate water availability under future scenarios.
- 03
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: Precipitation
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Bias correction
Correct and downscale climate model output for a site.
- 02
Emulators
Replace slow model runs with fast ML emulators.
- 03
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
Machine access and documentation
Open API
OPeNDAP server; expert URL-based subsetting/analysis at iridl.ldeo.columbia.edu
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
Related water data
- APDRC CPC Global Daily PrecipitationGlobal | Free
- APDRC NOAA-CIRES-DOE 20th Century Reanalysis V3Global | Free
- APDRC GPCP Merged Daily Precipitation v1.1Global | Free
- CHIRPS via IRI/LDEO Climate Data LibraryGlobal | Free
- CRU TS4.08 Gridded Climate Time Series (CEDA)Global | Free
- ERA5-Land Hourly on DestinE Earth Data HubGlobal | Free
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