GPM GMI: Global Daily Precipitation Estimates at 0.25-Degree Resolution

Global gridded daily precipitation averages derived from microwave satellite sensors. The dataset is produced by the National Aeronautics and Space Administration using the GPROF algorithm with climate-consistent ancillary data from ECMWF-Interim reanalysis. Version 07 is the current version, with older versions superseded.

Use Cases

• Conducting climate trend analysis based on homogeneous, climate-referenced precipitation retrievals.
• Studying atmospheric water vapor and hydrometeor profiles based on microwave sensor sensitivity.
• Validating and calibrating climate models using global, gridded precipitation averages.
• Analyzing spatial patterns of liquid and ice-phase precipitation on a daily scale.

Strengths

• Uses climate-homogeneous ancillary data from ECMWF-Interim reanalysis for consistent long-term analysis.
• Provides global coverage at a 0.25-degree by 0.25-degree spatial resolution.
• Based on retrievals from high-quality microwave sensors sensitive to precipitation phases.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite retrievals processed by the GPROF algorithm using microwave sensor data.

Time Range

Daily averages, with a climate time series implied.

Freshness

Last updated 2026-03-13 02:07:41.209749; freshness should be verified.

Geography

Global