Jiarong Wang, Hohai University, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,College of Hydrology and Water Resources, Nanjing, China, Xi Chen, Tianjin University, Institute of Surface-Earth System Science, Tianjin, China, Qi S Hu, Univ Nebraska-Lincoln, Lincoln, NE, United States and Jintao Liu, Hohai University, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, China