GPM GMI Climate-based Radiometer Precipitation Profiles: 4 km Resolution

Version 07 is the current climate-reference product for the GPM GPROF algorithm, using ECMWF-Interim reanalysis for homogeneous ancillary data. The algorithm retrieves precipitation profiles from a constellation of 10 passive microwave sensors, including GMI, TMI, and SSMIS, to provide bulk 3-hour global coverage. NASA produced this dataset, which was last updated on March 13, —.

Use Cases

• Climate trend analysis based on the homogeneous, climate-referenced ancillary data from ECMWF-Interim.
• Precipitation profile and hydrometeor structure retrieval based on the Bayesian GPROF algorithm using a constellation of sensors.
• Uncertainty quantification in precipitation estimates based on the mean rain rate and vertical structure outputs.
• Inter-sensor calibration and consistency studies based on data from the 10 different passive microwave instruments.

Strengths

• Provides a consistent climate data record using homogeneous ECMWF-Interim reanalysis ancillary data.
• Offers large spatial sampling from a constellation of 10 different satellite sensors.
• Algorithm is parametric and well-suited for a multi-sensor constellation approach.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Retrieved via the GPROF Bayesian algorithm from brightness temperature observations by a constellation of passive microwave satellite sensors.

Time Range

Climate time series (specific range not provided).

Freshness

Last updated 2026-03-13 02:06:31.542316; freshness should be verified.

Geography

Global coverage.