1. Department of Atmospheric Science Colorado State University Fort Collins CO USA
2. Air Quality Modeling Group, Office of Air Quality Planning and Standards U.S. Environmental Protection Agency Washington DC USA
3. Universities Space Research Association/GESTAR Columbia MD USA
4. Global Modeling and Assimilation Office NASA Goddard Space Flight Center Greenbelt MD USA
5. Department of Civil and Environmental Engineering Massachusetts Institute of Technology Cambridge MA USA
6. Institut d'Astrophysique et de Géophysique Université de Liège Liège Belgium
7. Université libre de Bruxelles (ULB), Atmospheric Spectroscopy, Service de Chimie Quantique et Photophysique Brussels Belgium
8. Texas Commission on Environmental Quality Austin TX USA
9. Institute of Arctic and Alpine Research University of Colorado Boulder Boulder CO USA
10. Department of Chemistry University of California Irvine CA USA
11. National Center for Atmospheric Research Boulder CO USA
12. Department of Physics University of Toronto Toronto Ontario Canada