Lingjiang Tao, Nanjing University of Information Science and Technology, Nanjing, China, Mu Mu, Fudan University, Department of Atmospheric and Oceanic Sciences & Institute of Atmospheric Sciences, Shanghai, China, Lei Wang, Fudan University, Shanghai, China, Xianghui Fang, IAP Insititute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China, Wansuo Duan, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China and Rong-Hua Zhang, Nanjing University of Information Science and Technolog, School of Marine Sciences, Nanjing, China