1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
2. Department of Water Resources Management, Delft University of Technology, 2628 CN Delft, Netherlands
3. National Drought Mitigation Center, University of Nebraska-Lincoln, 815 Hardin Hall, Lincoln, NE 68583-0988, USA
4. Water Resources Modelling Unit, Bureau of Meteorology, Brisbane, QLD 4000, Australia