1. Chemical Sciences Laboratory National Oceanic and Atmospheric Administration NOAA CO Boulder USA
2. Earth Systems Research Center University of New Hampshire NH Durham USA
3. NASA Jet Propulsion Laboratory California Institute of Technology CA Pasadena USA
4. NASA Langley Research Center VA Hampton USA
5. National Institute of Aerospace VA Hampton USA
6. Earth Sciences Division NASA Headquarters DC Washington USA
7. Aerodyne Research Inc. MA Billerica USA
8. Research Division California Air Resource Board CA Sacramento USA
9. Physical Sciences Division University of Washington WA Seattle USA
10. Lewis‐Clark State College ID Lewiston USA
11. Department of Chemistry and Biochemistry University of Montana MT Missoula USA
12. NASA Goddard Space Flight Center MD Greenbelt USA
13. Science Systems and Applications, Inc. (SSAI) MD Lanham USA
14. Laboratoire d’Optique Atmosphérique Lille University Villeneuve d'Ascq Cedex France
15. Research & Development Department Cimel Electronique Paris France
16. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder CO Boulder USA
17. Space Science and Engineering Center WI Madison USA
18. Naval Research Laboratory CA Monterey USA
19. Department of Atmospheric and Oceanic Sciences University of California Los Angeles CA Los Angeles USA
20. Institute of the Environment and Sustainability University of California Los Angeles CA Los Angeles USA
21. Earth, Ocean, and Atmospheric Science Florida State University FL Tallahassee USA
22. Now at Paul Scherrer Institute (PSI) Villigen Switzerland
23. Department of Chemistry University of Colorado Boulder CO Boulder USA
24. Now at: Forschungszentrum Jülich IEK 8: Troposphäre Jülich Germany
25. Department of Chemistry University of New Hampshire NH Durham USA
26. Air Quality Research Division Environment and Climate Change Canada ON Toronto Canada
27. School of Earth and Atmospheric Sciences Georgia Institute of Technology GA Atlanta USA
28. Department of Earth, Environment and Planetary Science Brown University RI Providence USA
29. Goddard Earth Sciences Technology and Research (GESTAR) II University of Maryland MD College Park USA