1. Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
2. International Joint Laboratory for Regional Pollution Control, 52428 Jülich, Germany
3. International Joint Laboratory for Regional Pollution Control, 100871 Beijing, China
4. State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, 100871 Beijing, China
5. Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado 80309, United States
6. Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
7. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
8. Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany
9. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado 80309, United States
10. Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University, 100871 Beijing, China
11. CAS Center for Excellence in Regional Atmospheric Environment, Chinese Academy of Science, 361000 Xiamen, China