1. Sino-French Institute for Earth System Science; College of Urban and Environmental Sciences; Peking University; Beijing 100871 China
2. Key Laboratory of Alpine Ecology and Biodiversity; Institute of Tibetan Plateau Research; Chinese Academy of Sciences; Beijing 100085 China
3. CAS Center for Excellence in Tibetan Plateau Earth Sciences; Chinese Academy of Sciences; Beijing 100085 China
4. LSCE; UMR CEA-CNRS; Bat. 709, CE, L'Orme des Merisiers Gif-sur-Yvette F-91191 France
5. Land and Water Flagship; CSIRO; GPO Box 1666 Canberra ACT 2601 Australia
6. Climate Change Science Institute; Environmental Sciences Division; Oak Ridge National Laboratory; Oak Ridge TN 37831 USA
7. Institute on Ecosystems; Department of Ecology; Montana State University; Bozeman MT 59717 USA
8. Ocean and Atmosphere Flagship; CSIRO; PMB #1 Aspendale Vic. 3195 Australia
9. Peking University Shenzhen Graduate School; Shenzhen 518055 China