GPM PR on TRMM: Daily Precipitation Statistics and Histograms at Surface and Fixed Heights

Ascending daily statistics from the Precipitation Radar (PR) instrument on the TRMM and GPM satellites. The dataset includes mean, standard deviation, rain fractions, histograms, and correlation coefficients for parameters like rain rate and reflectivity, gridded at 5x5 degree and 0.25x0.25 degree resolutions. Version 07 is the current version produced by NASA, superseding older versions.

Use Cases

• Analyze global precipitation patterns based on daily mean rain rate and standard deviation grids.
• Model storm height and bright band height distributions based on provided histograms.
• Assess radar measurement attenuation and correction factors based on path-integrated attenuation (PIA) and NUBF correction statistics.
• Compare precipitation characteristics across latitudes from 67S to 67N based on the high-resolution grid coverage.

Strengths

• Provides data at two horizontal resolutions: a low 5x5 degree grid and a high 0.25x0.25 degree grid.
• Includes multiple statistical products: means, standard deviations, fractions, histograms, and correlation coefficients for several atmospheric parameters.
• Version 07 is the current authoritative version, superseding all older versions.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data coverage beyond ±40 degrees latitude is padded with empty grid cells, limiting analysis in those regions.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite measurements from the Precipitation Radar (PR) instrument on the TRMM and GPM observatories.

Freshness

Last updated 2026-03-13 01:57:26.020920; freshness should be verified.

Geography

High-resolution grids cover 67S to 67N latitudes; low-resolution grids cover 70S to 70N latitudes.