1. Key Laboratory of Remote Sensing of Gansu Province, Heihe Remote Sensing Experimental Research Station; Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences; Lanzhou China
2. University of Chinese Academy of Sciences; Beijing China
3. CAS Center for Excellence in Tibetan Plateau Earth Sciences; Beijing China
4. USDA-ARS Hydrology and Remote Laboratory; Beltsville Maryland USA