1. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
2. Department of Chemistry University of Colorado Boulder Boulder CO USA
3. Department of Atmospheric Sciences University of Washington Seattle WA USA
4. Department of Chemistry Université de Montréal Montréal Quebec Canada
5. Air Quality Research Division Environment and Climate Change Canada Toronto Ontario Canada
6. Department of Atmospheric Science Colorado State University Fort Collins CO USA
7. Atmospheric Chemistry Observation and Modeling Laboratory National Center for Atmospheric Research Boulder CO USA
8. Department of Chemistry University of California Irvine CA USA
9. Institute for the Study of Earth, Ocean, and Space University of New Hampshire Durham NH USA
10. School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta GA USA
11. Chemical Science Division NOAA Earth System Research Laboratory Boulder CO USA