TRMM Combined Precipitation Radar (PR) and TRMM Microwave Imager (TMI) Gridded Rainfall Product (TRMM Product 3B31)Entry ID: GES_DISC_TRMM_PR_TMI_3B31_V6
Abstract: The TRMM Microwave Imager (TMI) is a nine-channel passive microwave radiometer which builds on the heritage of the Special Sensor Microwave/Imager (SSM/I) instrument. It is flown aboard the Defense Meteorological Satellite Program (DMSP) platforms.
The TRMM Precipitation Radar (PR), the first of its kind in space, is an electronically scanning radar, operating at 13.8 GHz that measures the 3-D ... rainfall distribution over both land and ocean, and defines the layer depth of the precipitation.
The TRMM 3B31 Monthly 5 deg. x 5 deg. Combined Rainfall product, contains Rain rate, cloud liquid water, rain water, cloud ice and graupel at 14 levels for a latitude band from 40 degree N to 40 degree S. It is derived from the TRMM combined algorithm (2B31), which combines data from the TMI and PR to produce the best rain estimate for TRMM.
Data Set Citation
Dataset Originator/Creator: TRMM Science Team/Haddad, Z. S., E. A. Smith, C. D. Kummerow, T. Iguchi, M. R. Farrar, S. L. Durden, M. Alves, and W. S. Olson
Dataset Title: TRMM Combined Precipitation Radar (PR) and TRMM Microwave Imager (TMI) Gridded Rainfall Product (TRMM Product 3B31)
Dataset Publisher: Goddard Space Flight Center Distributed Active Archive Center (GSFC DAAC)
Version: 6Online Resource: http://disc.gsfc.nasa.gov/datacollection/GES_DISC_TRMM_3B31_V6.shtml
Start Date: 1997-12-01
Latitude Resolution: 5 degrees
Longitude Resolution: 5 degrees
Horizontal Resolution Range: 500 km - < 1000 km or approximately 5 degrees - < 10 degrees
Temporal Resolution: Monthly
Temporal Resolution Range: Monthly - < Annual
ISO Topic Category
Quality The current version of 3B31 only checks various quality flags in the 2A12, but not the 2B31. The recent version of 2B31 has provided an uncertainty index. The quality check of 2B31 will be added in the next version to remove any input data with poor quality. Pixels for which the 2A12 is either zero, or unreliable, currently do not allow the user to reconstruct the 2B31 original solution. This will be addressed in the next reprocessing. It may require a file format modification.
Access Constraints None
Data Set Progress
Distribution Media: FTP
Distribution Size: file size; 383 KB
Distribution Format: HDF
Role: TECHNICAL CONTACT
Email: gsfc-help-disc at lists.nasa.gov
Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center
Province or State: MD
Postal Code: 20771
Email: kummerow at atmos.colostate.edu
Department of Atmospheric Science Colorado State University
City: Fort Collins
Province or State: CO
Postal Code: 80523
Role: DIF AUTHOR
Email: Zhong.Liu-1 at nasa.gov
NASA Goddard Space Flight Center Mailstop 610.2
Province or State: MD
Postal Code: 20771
Haddad, Z. S., E. A. Smith, C. D. Kummerow, T. Iguchi, M. R. Farrar, S. L. Durden, M. Alves, and W. S. Olson, 1997a: The TRMM `Day-1' Radar/Radiometer Combined Rain-Profiling Algorithm", J. Meteor. Soc. Japan, 75, 799-809.
Haddad, Z. S., D. A. Short, S. L. Durden, E. Im, S. Hensley, M. B. Grable and R.A. Black, 1997b: "A New Parametrization of the Rain Drop Size Distribution", IEEE Trans. ... Geosci. Rem. Sens., 35, 532-539.
Haddad, Z. S., E. A. Smith, C. D. Kummerow, T. Iguchi, M. R. Farrar, S. L. Durden, M. Alves, and W. S. Olson, 1996: "The TRMM 'Day-1' Radar/Radiometer Combined Rain-Profiling Algorithm", http://trmm.jpl.nasa.gov/paper.html
Interface Control Specification Between the Tropical Rainfall Measuring Mission Science Data and Information System (TSDIS) and the TSDIS Science User (TSU). Volume 4: File Specifications for TSDIS Products-Level 2 and Level 3. NASA Goddard Space Flight Center, March 5, 1999.
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2006-07-13
Last DIF Revision Date: 2014-05-16