1. Mechanical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
2. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
3. State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China
4. Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
5. Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado 80305, United States
6. Office of Air and Radiation, Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States
7. Office of Research and Development, Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States
8. Atmospheric Science, Colorado State University, Fort Collins, Colorado 80521, United States