Yongjiu Dai¹, *Wei Shangguan¹, Dagang Wang², Nan Wei¹, Qinchuan Xin², Hua Yuan¹, Shupeng Zhang¹, Shaofeng Liu¹, Fapeng Yan³, Xingji Lu¹ (1. Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, 2.School of Geography and Planning, Sun Yat-sen University, 3.College of Global Change and Earth System Science, Beijing Normal University)