1. Atmospheric Chemistry Division; National Center for Atmospheric Research; Boulder Colorado USA
2. School of Physical Sciences; University of California; Irvine California USA
3. Department of Atmospheric and Oceanic Sciences; University of Colorado Boulder; Boulder Colorado USA
4. Department of Atmospheric Science; Colorado State University; Fort Collins Colorado USA
5. NASA Langley Research Center; Hampton Virginia USA
6. Department of Meteorology; Pennsylvania State University; University Park Pennsylvania USA
7. Chemical Sciences Division, Earth System Research Laboratory; National Oceanic and Atmospheric Administration; Boulder Colorado USA
8. Division of Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
9. Department of Chemistry; University of Oslo; Oslo Norway
10. Institute of Ion Physics and Applied Physics; University of Innsbruck; Innsbruck Austria
11. School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
12. Graduate School of Oceanography; University of Rhode Island; Kingston Rhode Island USA
13. Chemistry Department; United States Naval Academy; Annapolis Maryland USA
14. Rosenstiel School of Marine and Atmospheric Science; University of Miami; Coral Gables Florida USA