[Sensor_Name: Short_Name='RAIN GAUGES']
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TRMM and Other Satellites Precipitation Product 3B42
Entry ID:
GES_DISC_TRMM_3B42_V6
Summary
Abstract:
This document provides basic information on 3B42, TRMM and Other Satellites Precipitation Product.The TRMM Multi-Satellite Precipitation Analysis (TMPA; computed at fine intervals as 3B-42) intercalibrates (to 2B31) and combines 2A-12, SSMI, AMSR and AMSU precipitation estimates (referred to as HQ). IR estimates from geostationary IR observations are made by calibrating the IR brightness temperatures to the HQ estimates. The 3B-42 estimates consist of the HQ where available and IR otherwise, all scaled to match the monthly satellite/rain gauge analyses in 3B-43.The output is precipitation (units: mm/hr) for 0.25x0.25 degree grid boxes on the latitude band 50 ° N-S every 3 hours. For more details of the algorithm, go to http://trmm.gsfc.nasa.gov/3b42.html
Related URL
Data Set Citation
Dataset Originator/Creator:
Tropical Rainfall Measurement Mission Project (TRMM)
Dataset Title:
TRMM 3-Hourly 0.25 deg. TRMM and Other Satellites Precipitation Product
Version:
6
Online Resource:
http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?t...
Temporal Coverage
Start Date:
1997-12-31
Stop Date:
2011-06-30
Location Keywords
Data Resolution
Latitude Resolution:
0.25 degree
Longitude Resolution: 0.25 degree Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree Vertical Resolution: Surface Temporal Resolution: 3-hourly Temporal Resolution Range: Hourly - < Daily Science Keywords
ISO Topic Category
Platform
Instrument
Quality
Random error estimates are provided for each 0.25 x 0.25 degree box. The quality of the 3B42 product is highly sensitive to the quality of the input data: TMI (product 2A12), and TRMM Combined Instrument (TCI) (product 3B31), SSMI, AMSR, AMSU precipitation estimates and IR estimates. If the quality of the input data is less than anticipated, then the quality of 3B42 will also be less.
Access Constraints
None
Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
Data Center
Distribution
Distribution Media:
FTP
Distribution Size:
avg file size: 0.37 MB (compressed)
Distribution Format:
HDF
Fees:
none
Personnel
Role:
INVESTIGATOR
Phone:
301-614-6308
Fax:
301-614-5492
Email:
George.J.Huffman at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Mailstop 612
City:
Greenbelt
Province or State:
Maryland
Postal Code:
20771
Country:
USA
Publications/References
Huffman, G.J., 1997: Estimates of Root-Mean-Square Random Error for Finite Samples of Estimated Precipitation, J. Appl. Meteor., 1191-1201.
Huffman, G.J., R.F. Adler, D.T. Bolvin, G. Gu, E.J. Nelkin, K.P. Bowman, Y. Hong, E.F. Stocker, D.B. Wolff, 2007: The TRMM Multi-satellite Precipitation Analysis: Quasi-Global, Multi-Year, Combined-Sensor Precipitation Estimates at Fine Scale. J. Hydrometeor., 8(1), 38-55. Huffman, G.J., R.F. Adler, D.T. Bolvin, E.J. Nelkin, 2010: The TRMM Multi-satellite Precipitation Analysis (TMPA). Chapter 1 in Satellite Rainfall Applications for Surface Hydrology, F. Hossain and M. Gebremichael, Eds. Springer Verlag, ISBN: 978-90-481-2914-0, 3-22. FAQ: http://disc.sci.gsfc.nasa.gov/additional/faq/precipitation_faq.shtml Creation and Review Dates
DIF Creation Date:
2006-09-12
Last DIF Revision Date:
2011-11-21
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