1. School of Engineering and Applied Sciences Harvard University Cambridge MA USA
2. School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta GA USA
3. Aerodyne Research Inc. Billerica MA USA
4. State Key Joint Laboratory of Environmental Simulation and Pollution Control BIC‐ESAT and IJRC College of Environmental Sciences and Engineering Peking University Beijing China
5. Department of Atmospheric and Oceanic Sciences and Laboratory for Climate and Ocean‐Atmosphere Studies School of Physics Peking University Beijing China
6. School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA USA
7. School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta GA USA
8. Department of Chemistry and Chemical Biology Harvard University Cambridge MA USA
9. Department of Earth and Planetary Sciences Harvard University Cambridge MA USA