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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 concistent with GPM HDF5 format, is available under short name GPM_3CMB_TRMM. Note that new TRMM Daily Combined product has now been made available: GPM_3CMB_TRMM_DAY.

The dataset TRMM_3B31 uses the high quality retrievals done for the narrow swath in 2B31 to calibrate the wide swath retrievals generated in 2A12. For each 0.5 degree box and each vertical layer, an adjustment ratio is calculated for the swath overlap region for one month. Only TMI pixels with 2A12 pixelStatus equal to zero are included in monthly averages, which effectively removes sea ice.

Product Summary

Platforms
TRMM
Instruments
PR ,
TMI
Spatial Extent

N: 40 S: -40 E: 180 W: -180

Geographic Region
TROPICS
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1997-12-01 to 2015-03-31
Data Partner
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
Concept ID
C1282032614-GES_DISC
Data State
COMPLETE
Number of Files/Granules
205
Processing Level
3
Published
Updated
Science Keywords
Cloud Liquid Water/Ice ,
Precipitation Amount ,
Rain

Data Center Citation

Tropical Rainfall Measuring Mission (TRMM). 2011. TRMM TMI/PR Combined Precipitation L3 1 month 0.5 degree x 0.5 degree V7. Greenbelt, MD: Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/TRMM_3B31_7.html.

Documents