1. California Air Resources Board Sacramento CA USA
2. Laboratory for Atmospheric Research Washington State University Pullman WA USA
3. Air Quality Research Center University of California Davis CA USA
4. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
5. Chemical Sciences Division, Earth System Research Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
6. Department of Chemistry and Biochemistry University of Colorado Boulder Boulder CO USA
7. School of Public and Environmental Affairs and Department of Chemistry Indiana University Bloomington IN USA
8. Department of Earth and Atmospheric Sciences University of Houston Houston TX USA
9. Now at Earth Science Division National Aeronautics and Space Administration Washington DC USA
10. Now at Department of Atmospheric Science Colorado State University Fort Collins CO USA
11. Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science University of Miami Miami FL USA
12. School of Physical Sciences University of California Irvine CA USA