TRMM Ground Validation (GV) Calibrated Radar Reflectivity Product (TRMM GV Product 1C51)

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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, 1997 at 4:27 PM (EST) from the Tanegashima Space Center in Japan.

The purpose of the TRMM Ground Validation (GV) program is to develop validation methods and to obtain ... View entire text
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Description: This URL contains information and data access for all of the Goddard DAAC's hydrology data holdings, including TRMM data from the TMI, Precipitation Radar (PR) and Visible and Infrared Scanner (VIRS) instruments, the Ground Validation (GV) radar data, and ancillary and correlative data products.
Geographic Coverage
Spatial coordinates   
  N: -12.25   S: -12.25   E: 131.04   W: 131.04
  N: 13.45   S: 13.45   E: -144.81   W: -144.81
  N: 29.47   S: 29.47   E: -95.08   W: -95.08
  N: 8.72   S: 8.72   E: 167.74   W: 167.74
  N: 28.11   S: 28.11   E: -80.64   W: -80.64

Data Set Citation
Dataset Originator/Creator: NASA, JAXA, Tropical Rainfall Measuring Mission Project (TRMM)
Dataset Title: TRMM Ground Validation (GV) Calibrated Radar Reflectivity Product (TRMM GV Product 1C51)
Version: 7
Online Resource:
Temporal Coverage
Start Date: 1997-12-01
Data Resolution
Latitude Resolution: 2 km
Longitude Resolution: 2 km
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree
Vertical Resolution: Surface
Temporal Resolution: 30 minutes
Temporal Resolution Range: 1 minute - < 1 hour
Quality Data quality check and control are applied to generate the TRMM_GV_1C51 data. Each file has a quality control mask for both reflectivity and differential reflectivity. Data are truncated at 200 km (slant range). The quality control mask consists of values from -99 to 99, with -99 indicating a deletion and 99 indicating that the point needs no correction. Values from -10 to +10 in the quality control mask are corrections to the data and are mathematically added to the corresponding data values. No other values are valid. Also included is a table of correction factors, to be mathematically added to the appropriate fields, generally related to the radar platform.
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: Online (FTP)
Distribution Size: average file size: 1924 KB
Distribution Format: HDF
Fees: none
Phone: (301)763-8000 x7290
Fax: 301)763-8545
Email: brad.ferrier at
Contact Address:
City: Camp Springs
Province or State: MD
Postal Code: 20705-2675
Country: USA
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Interface Control Specification Between the Tropical Rainfall Measuring Mission Science Data and Information System (TSDIS) and the TSDIS Science User (TSU). Volume 3: File Specifications for TRMM products-Level 1. NASA Goddard Space Flight Center.

Rosenfeld, D., E. Amitai, and D. B. Wolff, 1995: "Classification of rain regimes by the three-dimensional properties of reflectivity fields," J. Appl. Meteor., 34, 198-211.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2011-07-19
Last DIF Revision Date: 2014-05-30
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