Elucidating Particle Acidity during North China Winter Haze Events

Shaojie Song1, Meng Gao1, Yele Sun2, Mei Li3, Shuxiao Wang4, Yuxuan Wang5, Weiqi Xu6, Lei Zhu1, William Munger7 and Michael B McElroy1, (1)Harvard University, School of Engineering and Applied Sciences, Cambridge, MA, United States, (2)Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Beijing, China, (3)Jinan University, Institute of Atmospheric Environment Safety and Pollution Control, Guangzhou, China, (4)Tsinghua University, State Key Laboratory of Regional Environment and Sustainability, School of Environment, Beijing, China, (5)University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States, (6)Insititute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Atmospheric Boundary Physics and Atmospheric Chemistry, Beijing, China, (7)Harvard University, School of Engineering and Applied Sciences and Department of Earth and Planetary Sciences, Cambridge, MA, United States