Ruqian Miao¹, Qi Chen¹, Yele Sun², Ru-Jin Huang³, Yan Zheng¹ and Keren Liao¹, (1)Peking University, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (2)Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Beijing, China, (3)Institute of Earth Environment, Chinese Academy of Sciences, Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Xi’an, China