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Background and Purpose:
This specification defines the Level 3, system-level functional and performance requirements for NASA’s Global Precipitation Measurement (GPM) mission Ground Validation System Mobile Radar (GVSMR).

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Detailed specifications document for the Dual-Frequency, Dual-Polar, Doppler Radar (D3R)

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The Global Precipitation Measurement mission (GPM) Ground Validation (GV) Science Implementation Plan (GVSIP) applies three overarching approaches to validation of GPM satellite constellation measurements, products, and algorithms. These approaches include:

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This document provides a basic set of documentation for the data products available from the GPM Ground Validation System (GVS) Validation Network (VN). In the GPM era the VN performs a direct match-up of GPM’s space-based Dual-frequency Precipitation Radar (DPR) data with ground radar data from the U.S. network of NOAA Weather Surveillance Radar-1988 Doppler (WSR-88D, or “NEXRAD”). Ground radar networks from international partners are also part of the VN.

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Science plan for the Mid-Continent Convective Clouds Experiment (MC3E), scheduled for the spring of 2011. This campaign will be conducted in cooperation with the Department of Energy's (DoE) Atmospheric Radiation Program (ARM). The field campaign will be conducted in south-central Oklahoma. The goal of the campaign is to contribute to the improvement of radar and microwave precipitation retrieval algorithms over land.

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Excerpt:

"Enclosed is the 2007 TRMM Senior Review proposal in response to NASA's request. We are very excited about the continuation of the TRMM mission.

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"Next-generation unified precipitation observations from space will refine global data using the latest satellite technology"

An article from the publication Meteorological Technology International. It provides an overview of the GPM mission and it's goals, as well as a description of the Helsinki ground validation field experiment.

GPM flying over Earth with a data swath visualized.
Images Photos and illustrations from GPM, TRMM, and the Ground Validation missions. Videos Videos and animations from GPM, TRMM, and the Ground Validation missions. Frequently Asked Questions Get answers to some of the more frequently asked questions about the GPM and TRMM missions and precipitation measurement in general. Glossary Learn definitions for the terms which are used to describe and explain precipitation measurement. Students and Educators A resource for both teachers and students, learn about the basics of precipitation measurement and get lessons which can be used in the classroom...