Yixin Sun¹, Yixin Hao¹, Qiugang Zong¹, Elias Roussos², Ying Liu³ and Chongjing Yuan⁴, (1)Peking University, School of Earth and Space Sciences, Beijing, China, (2)Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany, (3)Peking University, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (4)Berkeley, CA, United States