1. Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
2. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, N.S. B3H3J5, Canada
3. Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
4. Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, United States
5. Goddard Earth Sciences Technology and Research, Universities Space Research Association, Greenbelt, Maryland 20771, United States
6. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91125-0002, United States
7. School of Population and Public Health, The University of British Columbia, 2206 East Mall, Vancouver, British Columbia V6T1Z3, Canada
8. Institute for Health Metrics and Evaluation, University of Washington, Seattle 98121, United States
9. Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, Texas 78712, United States
10. Department of Mechanical Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
11. CIRES, University of Colorado, Boulder, Colorado 80309, United States
12. Global Systems Division, Earth System Research Laboratory, NOAA, Boulder, Colorado 80309, United States
13. Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing 100084, China
14. Collaborative Innovation Center for Regional Environmental Quality, Beijing 100084, China
15. Department of Atmospheric Science, Colorado State University, Fort Collins 80523-1019, United States
16. Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, United States