1. Chemical Sciences DivisionNOAA Earth System Research Laboratory Boulder CO USA
2. Cooperative Institute for Research in Environmental SciencesUniversity of Colorado Boulder Boulder CO USA
3. Department of ChemistryUniversity of Colorado Boulder Boulder CO USA
4. Now at the Department of Physics and Atmospheric ScienceDalhousie University Halifax Nova Scotia Canada
5. Department of ChemistryUniversity of York York UK
6. Department of Atmospheric SciencesUniversity of Utah Salt Lake City UT USA
7. Jacobs Technology, Inc. Durham NC USA
8. Now at California Air Resources Board Sacramento CA USA
9. Department of Atmospheric SciencesUniversity of Washington Seattle WA USA
10. Now at ARM Aerial Facility, Pacific Northwest National Laboratory Richland WA USA
11. Office of Research and DevelopmentEnvironmental Protection Agency Durham NC USA
12. Department of Soil, Water, and ClimateUniversity of Minnesota, Twin Cities St. Paul MN USA
13. Department of ChemistryUniversity of Toronto Toronto Ontario Canada
14. Now at Department of ChemistryYork University Toronto Ontario Canada
15. NOAA Pacific Marine Environmental Laboratory Seattle WA USA
16. Now at the Institut für Ionenphysik und Angewandte PhysikUniversität Innsbruck Innsbruck Austria
17. Now at the Institute for Environmental and Climate ResearchJinan University Guangzhou China
18. Division of Air QualityUtah Department of Environmental Quality Salt Lake City UT USA