GPM_3CMB: Combined Satellite Precipitation Data at 0.25 Degree Resolution

GPM_3CMB Version 07 is a precipitation product from NASA combining measurements from the GPM Microwave Imager and Dual-frequency Precipitation Radar instruments. It provides global precipitation data at a 0.25 degree x 0.25 degree spatial resolution aggregated monthly. This dataset supersedes all older versions and is part of a series that includes a similar product for the TRMM epoch from December 1997 to April 2015.

Use Cases

• Modeling global precipitation climatology based on combined radar and microwave satellite measurements.
• Analyzing long-term trends in atmospheric water vapor based on the monthly aggregated data.
• Calibrating and validating other precipitation estimation algorithms using the GPM combined product.

Strengths

• Version 07 is the current and authoritative version, superseding all older data.
• Data combines measurements from two distinct satellite instruments (GMI and DPR).
• Spatial resolution is specified as 0.25 degree x 0.25 degree.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale ML tasks.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Created from combined measurements of the GPM Microwave Imager (GMI) and Dual-frequency Precipitation Radar (DPR).

Time Range

A similar product exists for the TRMM epoch from December 1997 to April 2015.

Freshness

Last updated 2026-03-13 02:29:20.391122; freshness should be verified.

Geography

Global coverage suggested by the satellite instruments and product name.