1. Atmospheric Science Department; Colorado State University; Fort Collins Colorado USA
2. School of Meteorology; University of Oklahoma; Norman Oklahoma USA
3. Chemical Sciences Division, Earth System Research Laboratory; National Oceanic and Atmospheric Administration; Boulder Colorado USA
4. Cooperative Institute for Research in Environmental Sciences; University of Colorado Boulder; Boulder Colorado USA
5. Atmospheric Chemistry Division; National Center for Atmospheric Research; Boulder Colorado USA
6. Rosenstiel School of Marine and Atmospheric Science; University of Miami; Miami Florida USA
7. Oak Ridge Associated Universities (ORAU); Oak Ridge Tennessee USA
8. NASA Langley Research Center; Hampton Virginia USA
9. Department of Chemistry; University of Oslo; Oslo Norway
10. Institut für Ionenphysik und Angewandte Physik; Innsbruck Austria
11. Department of Geosciences; Texas Tech University; Lubbock Texas USA
12. NOAA National Severe Storms Laboratory; Norman Oklahoma USA
13. Department of Atmospheric and Oceanic Science; University of Maryland; College Park Maryland USA
14. Atmospheric Chemistry and Dynamics Laboratory; NASA Goddard Space Flight Center; Greenbelt Maryland USA
15. Institut für Physik der Atmosphäre; Deutsches Zentrum für Luft- und Raumfahrt (DLR); Oberpfaffenhofen Germany