1. Department of Civil and Environmental Engineering, Princeton University, Princeton 08544, New Jersey, United States
2. Center for Mid-Infrared Technologies for Health and the Environmental, NSF-ERC, Princeton, New Jersey 08540, United States
3. Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado 80523, United States
4. Department of Civil, Structural and Environmental Engineering, University at Buffalo, Buffalo, New York 14260, United States
5. Research and Education in Energy, Environment and Water (RENEW) Institute, University at Buffalo, Buffalo, New York 14260, United States
6. Department of Soil and Crop Sciences, Colorado State University, Fort Collins, Colorado 80521, United States
7. Air Resources Division, National Park Service, Lakewood, Colorado 80235, United States
8. Air Resources Division, National Park Service, Fort Collins, Colorado 80525, United States
9. Chemistry and Dynamics Branch, Science Directorate, NASA Langley Research Center, Hampton, Virginia 23666, United States
10. Oak Ridge Associated Universities, Oak Ridge, Tennessee 37830, United States
11. Department of Chemistry, University of Oslo, Oslo 0315, Norway
12. Institute for Ion Physics and Applied Physics, University of Innsbruck, Innsbruck 6020, Austria