1. Earth System Science Programme, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
2. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
3. Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, 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. The Institute of Environment, Energy, and Sustainability, The Chinese University of Hong Kong, Hong Kong China