1. Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States
2. Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States
3. Department of Chemistry and Biochemistry, Weber State University, Ogden 84408, Utah, United States
4. Department of Chemistry, University of Montana, Missoula 59812, Montana, United States
5. NOAA Chemical Sciences Laboratory, Boulder 80305, Colorado, United States
6. NASA Langley Research Center, Hampton 23666, Virginia, United States
7. Aerodyne Research, Inc., Billerica 01821, Massachusetts, United States
8. National Institute of Aerospace, Hampton 23666, Virginia, United States
9. Florida State University Department of Earth, Ocean and Atmospheric Science, Tallahassee 32304, Florida, United States
10. Department of Chemistry, Colgate University, Hamilton 13346, New York, United States
11. Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles 90095, California, United States
12. Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles 90095, California, United States
13. Department of Chemistry, University of Oslo, Oslo 0371, Norway
14. Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck 6020, Austria