GPM TRMM: Monthly Latent Heating Profiles from Precipitation Radar

Version 07 is the current version of this NASA dataset. It provides monthly estimates of vertical latent heating profiles released by precipitating cloud systems, derived from TRMM Precipitation Radar (PR) data. The data is gridded at 0.25x0.25 degree resolution and covers latitudes from 67 degrees South to 67 degrees North.

Use Cases

• Modeling atmospheric convective and stratiform heating processes based on precipitation type and intensity.
• Analyzing the distribution of tropical rainfall energy release based on precipitation-top height and rain type.
• Comparing latent heating profiles between shallow and deep convection based on precipitation depth information.
• Validating cloud-resolving model simulations using lookup tables derived from TOGA COARE experiments.

Strengths

• Data is derived from the TRMM Precipitation Radar, a key instrument for tropical rainfall measurement.
• Grid resolution is 0.25x0.25 degrees, providing a detailed spatial view.
• Version 07 supersedes older versions, indicating ongoing refinement.

Limitations

• The algorithm is severely limited by the inherent sensitivity of the TRMM PR, which detects precipitation particles rather than cloud top.
• Column-level documentation is absent; field semantics must be inferred after download.
• Areas beyond ±40 degrees latitude are padded with empty grid cells, reducing data completeness in those regions.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from TRMM PR information using lookup tables from numerical simulations of tropical cloud systems.

Freshness

Last updated 2026-03-13 01:57:21.349870; freshness should be verified.

Geography

Latitudes from 67 degrees South to 67 degrees North.