We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.Read about the Web Unification Project
Description
This is the last version of the TRMM-formatted, in HDF4 format, Combined (Radar-Radiometer) product, which is in a state of permanent preservation. New version that is consistently processed with Global precipitation Measurement (GPM) algorithms, and in a consistent with GPM HDF5 format, is available under short name 'GPM_2BCMB_TRMM'.
The dataset TRMM_2B31 combines data from the TMI and PR to produce the best rain estimate for TRMM. This combined rainfall product is derived from vertical hydrometeor profiles using data from the PR radar and TMI. It also includes computed correlation-corrected, mass-weighted, mean drop diameter and its standard deviation, and latent heating data.
Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 215 km; Horizontal Resolution: 4.3 km
Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 247 km; Horizontal Resolution: 5.0 km
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
Copy Citation
Citation Copied
NASA Goddard Earth Sciences Data and Information Services Center. (2011). TRMM Combined Precipitation Radar and Microwave Imager Rainfall Profile L2 1.5 hours V7 (TRMM_2B31) at GES DISC [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/RJQ34L8S02R1 Date Accessed: 2026-06-04
NASA Goddard Earth Sciences Data and Information Services Center. “TRMM Combined Precipitation Radar and Microwave Imager Rainfall Profile L2 1.5 Hours V7 (TRMM_2B31) at GES DISC.” NASA Goddard Earth Sciences Data and Information Services Center, 2011. doi:10.5067/RJQ34L8S02R1. Date Accessed: 2026-06-04
NASA Goddard Earth Sciences Data and Information Services Center. TRMM Combined Precipitation Radar and Microwave Imager Rainfall Profile L2 1.5 Hours V7 (TRMM_2B31) at GES DISC. NASA Goddard Earth Sciences Data and Information Services Center, 2011, doi:10.5067/RJQ34L8S02R1. Date Accessed: 2026-06-04