1. Institute of Arctic and Alpine Research University of Colorado Boulder Boulder Colorado USA
2. National Center for Atmospheric Research Boulder Colorado USA
3. Atmospheric and Oceanic Sciences University of Colorado Boulder Boulder Colorado USA
4. Department of Atmospheric and Oceanic Science University of Maryland College Park Maryland USA
5. NASA Goddard Space Flight Center Greenbelt Maryland USA
6. Rosenstiel School of Marine & Atmospheric Science University of Miami Miami Florida USA
7. Department of Chemistry University of California Irvine California USA
8. City College of New York CUNY New York New York USA
9. NASA Langley Research Center Hampton Virginia USA
10. Department of Atmospheric Science Colorado State University Fort Collins Colorado USA
11. School of Meteorology National Weather Center University of Oklahoma Norman Oklahoma USA
12. NOAA/ESRL Boulder Colorado USA
13. CIRES University of Colorado Boulder Boulder Colorado USA
14. Institute of Ion Physics and Applied Physics University of Innsbruck Innsbruck Austria
15. Department of Chemistry University of Oslo Oslo Norway
16. Oak Ridge Associated Universities Oak Ridge Tennessee USA
17. SPEC Inc. Boulder Colorado USA