dataset · Global

GPM IMERG Final Precipitation L3 1 day 0.1 degree x 0.1 degree V07 (GPM_3IMERGDF) at GES DISC

Version 07 is the current version of the data set. Older versions will no longer be available and have been superseded by Version 07. The Integrated Multi-satellitE Retrievals for GPM (IMERG) IMERG is a NASA product estimating global surface precipitation rates at a high resolution of 0.1° every half-hour beginning 2000. It is part of the joint NASA-JAXA Global Precipitation Measurement (GPM) mission, using the GPM Core Observatory satellite as the standard to combine precipitation observations

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Source details

Licence: [Creative Commons BY 4.0](https://creativecommons.org/licenses/by/4.0/)

Evidence quality: 55.5

Listed in aws-odr public catalogue API on 2026-10-16; relevance/value screened (haiku).

Metadata checked: 2026-10-14T13:20:00.000Z

What's in it

Data offered docs-verified: daily mean precipitation rate (mm/day), combined microwave-IR-gauge ('precipitation') · microwave-only daily precipitation rate ('MWprecipitation') · daily valid-sample counts ('precipitation_cnt', 'MWprecipitation_cnt') · daily precipitation random error estimate (mm/day)
Coverage docs-verified: Global · 1998-01-01 to ongoing
Resolution docs-verified: Spatial: 0.1 degree x 0.1 degree grid (per product title; docs body says 10 x 10 km). Temporal: daily.
Update frequency docs-verified: Monthly batch delivery of the half-hourly input; the Final Daily product follows with up to 4 months' latency plus about 24 hours.
Formats docs-verified: NetCDF · OPeNDAP · AWS S3 bucket
Access docs-verified: Controlled access: AWS credentials are required to retrieve the data, per the docs. Licence: Creative Commons BY 4.0. Entry metadata lists auth as null.

Useful for

Use cases llm-inferred: Long-term daily rainfall baseline for FRA catchments where local gauges are sparse or short · Multi-year daily precipitation series as water balance or drainage strategy inputs, checked against local gauge records · Regional wet-day and seasonal rainfall context for environmental impact assessments
Audience llm-inferred: hydrologists · flood consultants · drainage engineers · environmental consultants · GIS analysts

Limitations

Constraints docs-verified: Daily product latency is months, not near-real-time: monthly batch delivery with up to 4 months' latency plus about 24 hours. · Satellite precipitation estimates are expected to have lower skill over frozen surfaces, complex terrain, and coastal zones. · The changing GPM satellite constellation may introduce artifacts that affect multi-year change studies. · Daily rates for the microwave-only variable depend on the valid-sample counts, which must be checked for significance. · Access requires AWS credentials, although the entry metadata lists auth as null. · The docs describe the grid as 10 x 10 km, while the product title says 0.1 degree x 0.1 degree, and the IMERG product is described as beginning in 2000 while the dataset range starts 1998-01-01.

Evidence

Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.