1. a Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences , Nanjing, 210008, China E-mail:
2. b Key Laboratory of Climate Change Research , China Meteorological Administration , Beijing, 100081, China
3. c Department of Geography and Resource Management , Institute of Space and Earth Information Science, The Chinese University of Hong Kong , Shatin, NT, Hong Kong, China
4. d Changjiang Water Resources Commission (CWRC), Ministry of Water Resources , Wuhan, 430000, China
5. e Universität der Bundeswehr München, Institut für Wasserwesen, Lehrstuhl für Wasserwirtschaft und Ressourcenschutz , Werner-Heisenberg-Weg 39, D-85577, Neubiberg, Germany
6. f Department of Geosciences , University of Oslo , PO Box 1047 Blindern, N-0316, Oslo, Norway