1. Environmental Engineering Program University of Colorado Boulder CO USA
2. Department of Mechanical Engineering University of Colorado Boulder CO USA
3. Harvard‐Smithsonian Center for Astrophysics Cambridge MA USA
4. Department of Environmental Science and Engineering Ewha Womans University Seoul South Korea
5. School of Earth and Environmental Sciences Seoul National University Seoul South Korea
6. School of Engineering and Applied Sciences Harvard University Cambridge MA USA
7. SRON Netherlands Institute for Space Research Utrecht The Netherlands
8. Institute for Ion Physics and Applied Physics University of Innsbruck Innsbruck Austria
9. Department of Chemistry University of Oslo Oslo Norway
10. Atmospheric Chemistry Observations and Modeling Laboratory National Center for Atmospheric Research Boulder CO USA