1. Department of Chemistry and Biochemistry University of Maryland College Park MD USA
2. NASA Goddard Space Flight Center Now at: Global Modeling and Assimilation Office Greenbelt MD USA
3. Now at: Universities Space Research Association Columbia MD USA
4. Department of Atmospheric and Oceanic Science University of Maryland College Park MD USA
5. Earth System Science Interdisciplinary Center University of Maryland College Park MD USA
6. Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA
7. Department of Civil and Environmental Engineering Laboratory for Atmospheric Research Washington State University Pullman WA USA
8. Harvard‐Smithsonian Center for Astrophysics Cambridge MA USA
9. NASA Goddard Space Flight Center Atmospheric Chemistry and Dynamics Laboratory Greenbelt MD USA
10. Science Systems and Applications Inc. Lanham MD USA
11. Department of Chemistry Lawrence University Appleton WI USA
12. NASA Jet Propulsion Laboratory and California Institute of Technology Pasadena CA USA
13. Geophysical Institute and Department of Chemistry and Biochemistry University of Alaska Fairbanks Fairbanks AK USA