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In TRMM V7 2A12, why are there no hydrometeor profiles over land?
Posted: Tue Sep 01, 2026 11:32 am America/New_York
by GES DISC - igarcias
Answer:
All hydrometeor profiles over land are set to missing in V7 2A12 due to large uncertainty.
Related Data Collections:
TRMM_2A12_7
Re: In TRMM V7 2A12, why are there no hydrometeor profiles over land?
Posted: Wed Sep 09, 2026 1:40 pm America/New_York
by GES DISC-EDL - zliu
Additional comment from John Kwiatkowski,
Due do large uncertainties the TRMM 2A12 hydrometeor profiles over land are set to missing. Users should be accessing the GPM era data products: TMI GPROF
https://storm.pps.eosdis.nasa.gov/storm/ or through GES DISC 2A-CLIM 2AGPROFTMI TRMM TMI Precipitation (GPM_2AGPROFTRMMTMI_CLIM).
Algorithm description:
2AGPROFTMI, "Radiometer Profiling", generates surface rainfall and vertical hydrometeor profiles on a pixel by pixel basis from radiometer brightness temperature data using the Goddard Profiling Neural Network algorithm GPROFNN2024 or GPROFNNv1. DOI: 10.5067/GPM/TMI/TRMM/GPROFCLIM/2A/08