1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, BIC-ESAT and IJRC, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
2. Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau 999078, China
3. Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, Helsinki 00014, Finland
4. Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
5. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
6. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
7. Aerodyne Research Inc., Billerica, Massachusetts 01821, United States