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TRMM Precipitation Radar (PR) Level 2 Rain Characteristics Product (TRMM Product 2A23)

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Abstract: The Tropical Rainfall Measuring Mission (TRMM) is a joint U.S.-Japan satellite mission to monitor tropical and subtropical precipitation and to estimate its associated latent heating. TRMM was successfully launched on November 27, at 4:27 PM (EST) from the Tanegashima Space Center in Japan.

The TRMM Precipitation Radar (PR), the first of its kind in space, is an electronically scanning radar, ... View entire text
Related URL
Description: Access the data via FTP.
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Multimedia Sample
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Caption:  2A23 PR bright band and rain type, ascending and descending orbits
Geographic Coverage
Spatial coordinates   
  N: 38.0   S: -38.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: Tropical Rainfall Measuring Mission (TRMM)
Dataset Title: TRMM Precipitation Radar (PR) Level 2 Rain Characteristics Product (TRMM Product 2A23)
Dataset Series Name: TRMM_2A23
Dataset Release Date: July 2011
Dataset Release Place: Greenbelt, MD
Dataset Publisher: Goddard Space Flight Center Distributed Active Archive Center (GSFC DAAC)
Version: 7
Online Resource:
Temporal Coverage
Start Date: 1997-12-07
Stop Date: 2015-04-01
Data Resolution
Latitude Resolution: 4 km
Longitude Resolution: 4 km
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree
Temporal Resolution: 16 orbits per day
Temporal Resolution Range: Hourly - < Daily
Quality Scan Status is provided containing scan-by-scan information on quality, platform and instrument control data, and fractional orbit number. Status Flag is also provided indicating whether the data are obtained over sea or land and the degree of data reliability.
Access Constraints None
Ancillary Keywords
Data Set Progress
Originating Center
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 Supplemental Info
Data Center URL:

Data Center Personnel
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at
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 Media: FTP
Distribution Size: 15-16 files/day; 6600-6700 KB/file
Distribution Format: HDF
Fees: none
Phone: 81-115-71-5111
Fax: 81-115-71-7879
Email: awaka at
Contact Address:
Hokkaido Tokai University
Department of Electronics and Information Engineering
Minami-ku, Minami-sawa, 5-1-1-1
City: Sapporo
Province or State: Hokkaido
Postal Code: 005-8601
Country: JAPAN
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2A23 V7 User's Guide:

File Specifications for TRMM Products:

Metadata for TRMM Products:

TRMM V6 vs. V7 Major Data Format Changes:

Awaka, J., T. Iguchi, and K. Okamoto, 1998: "Early results on rain type classification by the Tropical Rainfall Measuring Mission (TRMM) precipitation radar," Proc. 8th URSI Commission F Open Symp., Aveiro, Portugal, pp. 143-146.

Steiner, M., R.A. Houze, Jr., and S.E. Yuter, 1995: "Climatological characterization of three-dimensional storm structure from operational radar and rain gauge data," J. Appl. Meteor., 34, pp. 1978-2007.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2011-07-15
Last DIF Revision Date: 2016-01-20
Future DIF Review Date: 2016-07-31

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