1. a School of Water Resources and Environment , China University of Geosciences , No. 29, Xueyuan Rd, Haidian District, Beijing, 100083, China
2. c Wageningen University & Research Centre , Centre for Geo‐Information , Droevendaalsesteeg 3, 6708 PB Wageningen, The Netherlands
3. b Department of Geoscience , University of Iowa , North Capitol Street, Iowa City, IA 52242, USA