1. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder Colorado USA
2. Chemical Sciences Division, Earth System Research Laboratory National Oceanic and Atmospheric Administration Boulder Colorado USA
3. Now at Horiba Scientific Edison New Jersey USA
4. School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta Georgia USA
5. School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
6. Department of Chemistry Reed College Portland Oregon USA
7. Now at Division of Chemistry and Chemical Engineering California Institute of Technology Pasadena California USA
8. Atmospheric Research & Analysis, Inc. Cary North Carolina USA
9. Department of Earth and Planetary Science University of California Berkeley California USA
10. Department of Chemistry University of California Berkeley California USA
11. Now at Department of Chemistry University of California Irvine California USA
12. Department of Chemistry and Biochemistry University of Colorado Boulder Boulder Colorado USA
13. Department of Chemistry University of Iowa Iowa City Iowa USA