Donghai Zheng¹, Xin Li¹, Zhongbo Su², Jun Wen³, Rogier Van der Velde², Xin Wang⁴, Zuoliang Wang⁴ and Mike Schwank⁵, (1)Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, (2)Faculty of Geo-Information Science and Earth Observation, University of Twente, Enschede, Netherlands, (3)College of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, China, (4)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, (5)Swiss Federal Research Institute WSL, Birmensdorf,, Switzerland