1. State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
2. Laboratory of Atmospheric Physico-Chemistry, Hefei Institutes of Physical Science Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
3. School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K.
4. Chinese Academy of Meteorological Science, Institute of Atmospheric Composition, Beijing 100081, China
5. Institute of Mass Spectrometry and Atmospheric Environment, Jinan University, Guangzhou 510632, China
6. Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
7. China Meteorological Administration Beijing Institute of Urban Meteorology, Beijing 100089, China