GPM SSMIS F18: Daily Global Precipitation Grids for Climate Studies

Version 07 climate-referenced precipitation data from the GPM mission uses a homogeneous reanalysis to ensure consistency for long-term studies. The product provides daily global averages at a 0.25-degree resolution, derived from microwave sensors sensitive to liquid and ice-phase precipitation. NASA produces this dataset, which was last updated in March 2026.

Use Cases

• Climate trend analysis based on homogeneous, climate-referenced ancillary data.
• Validating atmospheric models using global gridded precipitation averages.
• Studying the global water cycle based on microwave sensor retrievals of hydrometeors.

Strengths

• Uses Version 07, the current and superseding version of the data.
• Provides global coverage at a 0.25-degree spatial resolution.
• Based on retrievals from high-quality microwave sensors sensitive to precipitation phases.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Ancillary data from ECMWF-Interim has a 2-3 month lag behind regular production.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Retrievals from the SSMIS instrument on the F18 satellite, processed by the GPROF algorithm.

Freshness

Last updated 2026-03-13 02:15:17.558910; freshness should be verified.

Geography

Global