1. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, 999077, China
3. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
4. State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai, 200233, China
5. Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland
6. Joint International Research Laboratory of Atmospheric and Earth System Research, School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China
7. School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519000, China
8. 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