GPM TMI: TRMM Microwave Imager Geolocated Sensor Data for Single Orbits

Version 07 is the current version of this data set, which contains science and housekeeping sensor count data directly from the TRMM Microwave Imager (TMI) Instrument aboard the TRMM satellite. A Level 1A file contains data for a single orbit and has a file size of about 33 MB, with 16 files produced per day. The data is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Analyzing the diurnal cycle of precipitation based on the different local time coverage each day mentioned in the description
• Studying tropical and subtropical weather patterns based on the spatial coverage between 38 degrees North and 38 degrees South
• Calibrating or validating microwave remote sensing algorithms based on the unpacked and geolocated TMI sensor count data
• Investigating orbital sensor performance based on the included science and housekeeping data

Strengths

• Data is geolocated and unpacked from spacecraft packets, providing a processed foundation for analysis
• Spatial coverage is focused on the tropics and subtropics (38°N to 38°S), relevant for precipitation studies
• Version 07 is the current and superseding version, indicating a maintained data product
• Each orbit's data is contained in a single file of approximately 33 MB, providing a consistent unit of analysis

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
• Spatial coverage is limited to 38 degrees North and 38 degrees South, excluding higher latitudes

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data unpacked and geolocated from the TRMM Microwave Imager (TMI) Instrument aboard the TRMM satellite.

Time Range

Temporal coverage is not explicitly stated in the provided description.

Freshness

Last updated 2026-03 13 02:15:06.911114; freshness should be verified

Geography

Spatial coverage is between 38 degrees North and 38 degrees South.