An Introduction to GPM Version 07

George John Huffman1, Scott A Braun1, Mircea Grecu1,2, Takuji Kubota3, Christian D Kummerow4, Stephen E Lang1,5, Adrian Loftus1, William S Olson1,6, Erich Franz Stocker1, Nobuhiro Takahashi7, Yukari N Takayabu8 and Wei-Kuo Tao1, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)Morgan State University, Baltimore, United States, (3)JAXA/EORC, Tsukuba, Japan, (4)Colorado State University, Fort Collins, CO, United States, (5)Science Systems and Applications, Inc., Lanham, MD, United States, (6)University of Maryland Baltimore County, Baltimore, MD, United States, (7)Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan, (8)The University of Tokyo, Tokyo, Japan