Dingwen Zeng, Institute of Atmospheric Physics, Chinese Academy of Sciences, Key Laboratory of Regional Climate-Environment for Temperate East Asia (RCE-TEA), Beijing, China, Xing Yuan, Nanjing University of Information Science and Technology, School of Hydrology and Water Resources, Nanjing, China and Joshua K Roundy, NASA Goddard Space Flight Center, Hydrological Sciences Laboratory, Greenbelt, MD, United States