1. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 100084 Beijing, China
2. School of Resources and Environmental Sciences, Wuhan University, 430072 Wuhan, China
3. Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, 00014 Helsinki, Finland
4. Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, 210023 Nanjing, China
5. Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
6. Minerva Research Group, Max Planck Institute for Chemistry, Mainz 55128, Germany
7. Chemistry Department, University of California, Irvine, California 92697, United States