1. Department of Atmospheric Sciences, Texas A&M University, Eller O&M Building, 1204, 3150 TAMU, 797 Lamar Street, College Station, Texas 77843, United States
2. Department of Chemistry, University of Michigan, 930 N University Avenue, Ann Arbor, Michigan 48104, United States
3. Gillings School of Global Public Health, Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, 170 Rosenau Hall, Campus Box #7400, 135 Dauer Drive, Chapel Hill, North Carolina 27599, United States
4. Aerodyne Research, Inc, 45 Manning Road, Billerica, Massachusetts 01821, United States
5. College of Arts and Sciences, Department of Chemistry, University of North Carolina at Chapel Hill, Campus Box #3290, 125 South Road, Chapel Hill, North Carolina 27599, United States