Precipitation Retrieval Algorithms for GPM
The core satellite of the Global Precipitation Measurement mission was launched in February 2014. It carries the Dual-frequency Precipitation Radar (DPR) and the GPM Microwave Imager (GMI). Although they were designed to measure precipitation in a way that is similar to that of the Precipitation Radar (PR) and the TRMM Microwave Radiometer (TMI) on board the TRMM satellite, both of these instruments have new frequency channels and provide us with new information. The coverage of the GPM core satellite includes high-latitude regions that were not covered by the TRMM measurements. Because of these new features and conditions, new and advanced algorithms must be developed for DPR and GMI. Furthermore, combination of DPR, GMI and other available data may better estimate global and regional precipitation. This AMS special collection of papers brings together the theories behind such algorithms along with results from GPM data analyses that are designed for an accurate retrieval of precipitation from space.
Toshio Iguchi, National Institute of Information and Communications Technology, Japan
Christian D. Kummerow, Department of Atmospheric Science, Colorado State University
William Olson, Joint Center for Earth Systems Technology, University of Maryland, Baltimore County