1 Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843; Department of Chemistry, Texas A&M University, College Station, TX 77843; State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; renyi-zhang@tamu.edu minhu@pku.edu.cn.
2 Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843; Department of Chemistry, Texas A&M University, College Station, TX 77843; State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;
3 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91125.
4 State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; renyi-zhang@tamu.edu minhu@pku.edu.cn.