GPM PR on TRMM Spectral Latent Heating Profiles: Daily 0.5x0.5 Degree Grids

NASA's Global Precipitation Measurement (GPM) mission provides daily 0.5x0.5 degree gridded vertical profiles of latent heating released by precipitating cloud systems. The data, covering latitudes from 67°S to 67°N, are derived from TRMM Precipitation Radar (PR) information using lookup tables from cloud-resolving model simulations. Version 07 is the current version, superseding all older releases.

Use Cases

• Modeling atmospheric energy budgets based on vertical latent heating profiles.
• Analyzing tropical precipitation systems based on rain type classification (convective, shallow stratiform, anvil).
• Studying cloud dynamics based on precipitation-top height and surface precipitation rate data.
• Validating climate and weather models based on satellite-derived heating estimates.

Strengths

• Data is derived from the TRMM Precipitation Radar, a key instrument for tropical rainfall measurement.
• Provides a 0.5x0.5 degree daily grid with a distinct vertical profile dimension.
• Version 07 is the current and maintained version, indicating active curation.

Limitations

• The algorithm is described as 'severely limited' by the sensitivity of the TRMM PR to detect only precipitation-sized particles, not actual cloud top.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and exact file sizes are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA) via the GES DISC.

Collection Method

Derived from TRMM Precipitation Radar data using a lookup table method based on cloud-resolving model simulations from TOGA COARE.

Time Range

Daily temporal resolution.

Freshness

Last updated 2026-03-13 02:16:57.758553; freshness should be verified.

Geography

Global coverage from 67°S to 67°N latitude, with areas beyond ±40° padded with empty cells.