1. a Satellite Environment Centre, Ministry of Environmental Protection of PR China , Beijing , 100029 , PR China
2. b State Key Laboratory of Earth Process and Resource Ecology, Beijing Normal University , Beijing , 100875 , PR China
3. c Academy of Disaster Reduction and Emergency Management, Beijing Normal University , Beijing , 100875 , PR China
4. d Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration , Beijing , 100081 , PR China