Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

TRMM Ground Validation Radar Site Rain Type Totals Map L3 1 month 2 km V7 (TRMM_3A54UW) at GES DISC

Metadata Updated: April 10, 2025

This dataset is part of the University of Washington TRMM Ground Validation products.

Monthly rain accumulation cartesian grid based on 2A53UW. Units are mm. Min range is 17 km, max range is 150 km. Horizontal extent is 150x150km and resolution is 2km. Note that in the netCDF files, "alt" (altitude) is assigned the elevation angle of the lowest sweep (which is used to create baseUW) and "z_spacing" has no meaning.

A key component of the TRMM project is the Ground Validation (GV) effort which consists of collecting data from ground-based radar, rain gauges and disdrometers. The data is quality-controlled, and then validation products are produced for comparison with TRMM satellite products.

The four primary GV sites are:

  • Darwin, Australia;
  • Houston, Texas;
  • Kwajalein, Republic of the Marshall Islands;
  • Melbourne, Florida.

A significant effort is also being supported at NASA Wallops Flight Facility (WFF) and vicinity to provide high quality, long-term measurements of rain rates (via a network of rain gauges collocated with National Weather Service gauges), as well as drop size distributions (DSD) using a variety of instruments, including impact-type Joss Waldvogel, laser-optical Parsivel, as well as two-dimensional video disdrometers. DSD measurements are also being collected at Melbourne and Kwajalein using Joss-Waldvogel disdrometers.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date November 12, 2020
Metadata Updated Date April 10, 2025

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date April 10, 2025
Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
Maintainer
Identifier C1356506695-GES_DISC
Data First Published 2011-07-01
Language en-US
Data Last Modified 2025-03-31
Category TRMM, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 91dcf816-98e2-4859-96dc-750f6c218e53
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1356506695-GES_DISC.html
Metadata Type geospatial
Old Spatial -180.0 -40.0 180.0 40.0
Program Code 026:001
Source Datajson Identifier True
Source Hash 1dc1e476bd689ce5b86aec6819eed2a83cd53258e059c2a3ce26736c7ddb127e
Source Schema Version 1.1
Spatial
Temporal 1999-07-01T00:00:00Z/2000-12-31T23:59:59.999Z

Didn't find what you're looking for? Suggest a dataset here.