Seventh International Precipitation Working Group (IPWG) Workshop
The World Meteorological Organizational Coordination Group for Meteorological Satellites (CGMS) formed the International Precipitation Working Group (IPWG) in 2001, in order to foster the international collaboration and advancement in precipitation retrieval from satellites. Details on the IPWG can be found at http://www.isac.cnr.it/~ipwg/IPWG.html. This special collection of papers is based on presentations made at the Seventh IPWG Workshop, which was held in Tsukuba, Japan, 17-21 November 2014. The IPWG held this workshop in honor of Dr. Arthur Yuhan Hou, who played leading roles in the Tropical Rainfall Measuring Mission (TRMM) and Global Precipitation Measurement (GPM), joint satellite precipitation missions between the United States National Aeronautics and Space Administration (NASA) and the Japan Aerospace and Exploration Agency (JAXA). This special collection provides a current status of precipitation estimation using satellites, including the precipitation retrieval algorithms, application of the data products on both regional and global scales, and the validation of estimates at various temporal and spatial scales. As co-organizers of the seventh IPWG workshop, we invite you to read these papers in this special collection of Journal of Hydrometeorology and hope that they stimulate further research and application in precipitation estimation from satellites.
Riko Oki, Earth Observation Research Center, JAXA, Seventh IPWG workshop host
Kazumasa Aonashi, Meteorological Research Institute, Japan Meteorological Agency
Nai-Yu Wang, University of Maryland