1 Key Laboratory of Tibetan Environmental Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; guoqing.zhang@itpcas.ac.cn.
2 Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100101, China.
3 Key Laboratory of Tibetan Environmental Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
4 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
5 Center for Advanced Measurements in Extreme Environments, University of Texas at San Antonio, San Antonio, TX 78249.
6 Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX 78249.
7 Division of Geodetic Science, School of Earth Sciences, The Ohio State University, Columbus, OH 43210.