[1]China Meteorological Administration Training Center Beijing 100081 China [2]China Meteorological Administration Development Research Centre Beijing 100081 China [3]State Key Laboratory of Earth Surface Processes and Resource Ecology Beij'ing Normal University Beijing 100875 China [4]Academy of Disaster Reduction and Emergency Management Ministry of Civil Affairs & Ministry of Education Beijing 100875 China [5]School of Resources and Environmental Science Wuhan University Wuhan 430079 China;