1. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, P.O. Box 2871, No. 18, Shuangqing Road, Beijing 100085, China
2. Department of Water Resources, International Institute for Geo-Information Science and Earth Observation, Hengelosestraat 99, Enschede, VV 7500 AA, Netherlands
3. Lanzhou Institute of Arid Meteorology, China Meteorological Administration, No. 2070, Donggang East Road, Lanzhou, Gansu 730020, China
4. School of Geography and Remote Sensing, Beijing Normal University, No. 19, Xinjiekou Wai Street, Beijing 100875, China
5. Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado 80523, U.S.A
6. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320, Donggang West Road, Lanzhou, Gansu 730000, China