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TRMM Combined Precipitation Radar (PR) and TRMM Microwave Imager (TMI) Gridded Rainfall Product (TRMM Product 3B31)

Entry ID: GES_DISC_TRMM_3B31_V7

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Summary

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 ...

Description: OPeNDAP Earth Science Data TRMM 3B31.

Multimedia Sample

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Caption: 3B31 TRMM combined monthly accumulated surface rainfall

Geographic Coverage

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Spatial coordinates

N: 40.0

S: -40.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: NASA,JAXA, Tropical Rainfall Measuring Mission (TRMM)

Dataset Title: TRMM Combined Precipitation Radar (PR) and TRMM Microwave Imager (TMI) Gridded Rainfall Product (TRMM Product 3B31)

Version: 7

Online Resource: http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?t...

Temporal Coverage

Start Date: 1997-12-01

Location Keywords

GEOGRAPHIC REGION > TROPICS

Data Resolution

Latitude Resolution: 0.5 degrees
Longitude Resolution: 0.5 degrees
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution: Monthly
Temporal Resolution Range: Monthly - < Annual

Science Keywords

ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD LIQUID WATER/ICE

ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT

ATMOSPHERE > PRECIPITATION > RAIN

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

TRMM > Tropical Rainfall Measuring Mission

Instrument

PR > TRMM Precipitation Radar

TMI > TRMM Microwave Imager

Project

EOS > Earth Observing System

EOSDIS > Earth Observing System Data Information System

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

Ancillary Keywords

EOSDIS

Data Set Progress

IN WORK

Originating Center

NASA GSFC GES DISC

Data Center

Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP Phone: 301-614-5224 Fax: 301-614-5268 Email: gsfc-help-disc at lists.nasa.gov Contact Address: Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

Distribution

Distribution Media: FTP

Distribution Size: file size; 383 KB

Distribution Format: HDF

Fees: none

Personnel

HYDROLOGY DATA SUPPORT TEAM

Role: TECHNICAL CONTACT

Phone: (301) 614-5165

Fax: (301) 614-5268

Email: gsfc-help-disc at lists.nasa.gov

Contact Address:

Hydrology Data Support Team, Code 610.2

Goddard Space Flight Center

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

CHRISTIAN KUMMEROW

Role: INVESTIGATOR

Phone: +1 (970) 491-7473

Fax: +1 (970) 491-8449

Email: kummerow at atmos.colostate.edu

Contact Address:

Department of Atmospheric Science

Colorado State University

200 West Lake Street

City: Fort Collins

Province or State: CO

Postal Code: 80523

Country: USA

HYDROLOGY DATA SUPPORT TEAM

Role: DIF AUTHOR

Phone: (301) 614-5165

Fax: (301) 614-5268

Email: gsfc-help-disc at lists.nasa.gov

Contact Address:

Hydrology Data Support Team, Code 610.2

Goddard Space Flight Center

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

Publications/References

File Specifications for TRMM Products: ftp://pps.gsfc.nasa.gov/pub/v7filespec/filespec.TRMM.V7.pdf

Metadata for TRMM Products: ftp://pps.gsfc.nasa.gov/pub/v7filespec/filespecMeta.TRMM.V7.pdf

TRMM V6 vs. V7 Major Data Format Changes: http://pps.gsfc.nasa.gov/Documents/formatChangesV7.pdf

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

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2011-07-19

Last DIF Revision Date: 2013-03-22

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