1. Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, 00014, Finland
2. Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
3. Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Sciences and Engineering, Beijing University of Chemical Technology (BUCT), Beijing, China
4. Faculty of Geography, Lomonosov Moscow State University, Moscow, Russia