Spaceborne Precipitation Radar Ships from Japan to U.S.

By Aries Keck, NASA Goddard Space Flight Center

Original www.nasa.gov Press Release (published 2/8/12)

GREENBELT, Md. – Japanese scientists and engineers have completed construction on a new instrument designed to take 3-D measurements of the shapes, sizes and other physical characteristics of both raindrops and snowflakes. The instrument will be shipped from Japan to NASA's Goddard Space Flight Center, Greenbelt, Md., to be integrated into an upcoming NASA Earth science satellite.

GCPEx Ground Instruments

Multiple GCPEx ground instruments at the CARE site.
Image Caption: 
Three GCPEx precipitation sensors with the Environment Canada building in the background, taken 7 February 2012.

Note the low snow amounts on the ground. Sensors left to right are: ADMIRARI (radiometer; U. Bonn), D3R (radar; NASA), DPR (radar; U. Koln). [This dual-precipitation radar (DRR) is not the same as to be on the GPM spacecraft.] 

Learn more about GCPEx

GPM/DPR Level 2 Algorithm Theoretical Basis Document (ATBD)

Published Date: 

The objective of the level 2 DPR algorithms is to generate from the level 1 DPR products radaronly derived meteorological quantities on an instantaneous FOV (field of view) basis. A subset of the results will be used by the level 2 combined radar-radiometer algorithm and the level 3 combined and radar-only products. 

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