1. Department
of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
2. Air Surveillance
and Analysis Section, Hawai‘i State Department of Health, Hilo, Hawai‘i, United States
3. Center
for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, Massachusetts, United States
4. Department
of Chemistry, University of Toronto, Toronto, Ontario, Canada