Magdalena D. Anguelova, Michael H. Bettenhausen, Naval Research Laboratory, United States; Emmanuel Dinnat, Goddard Space Flight Center, NASA, United States; Lise Kilic, Catherine Prigent, Jacqueline Boutin, National Centre for Scientific Research (CNRS), France; Stephen English, ECMWF, United Kingdom; Thomas Meissner, Remote Sensing Systems (RSS), United States; Stuart Newman, MET OFFICE, United Kingdom; Ben Johnson, University Corporation for Atmospheric Research (UCAR)/Joint Center for Satellite Data Assimilation (JCSDA), United States; Simon Yueh, Jet Propulsion Laboratory (JPL), NASA, United States; Masahiro Kazumori, Japan Meteorological Agency (JMA), Japan; Fuzhong Weng, China Meteorological Administration (CMA), China; Ad Stoffelen, The Royal Netherlands Meteorological Institute (KNMI), Netherlands; Christophe Accadia, European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), Germany