1. 1. U.S. Geological Survey, Western Geographic Science Center, Moffett Field, CA 94035, USA
2. 2. School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China
3. 3. College of Hydrology and Water Resources, Hohai University, Nanjing 210024, China
4. 4. School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China
5. 5. College of Geography and Resources Sciences, Sichuan Normal University, Chengdu 610068, China
6. 6. Department of Geographical Sciences, University of Maryland, College Park, MD 20742, USA
7. 7. School of Forestry, Northeast Forestry University, Harbin 150040, China
8. 8. KBR Inc., contractor to the U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center, Sioux Falls, SD 57198, USA