1Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA
2Aerodyne Research Inc. , Center for Aerosol and Cloud Chemistry , Billerica , Massachusetts , USA
3Aerodyne Research Inc. , Center for Aerosol and Cloud Chemistry , Billerica , Massachusetts , USA ; Department of Chemistry, Boston College , Chestnut Hill , Massachusetts , USA
4Aerodyne Research Inc. , Center for Aerosol and Cloud Chemistry , Billerica , Massachusetts , USA ; Tofwerk AG , Thun , Switzerland
5University of Colorado Boulder, Boulder, United States
6Aerodyne Research Inc. , Center for Aerosol and Cloud Chemistry , Billerica , Massachusetts , USA ; AeroMegt GmbH , Germany
7Cooperative Institute for Research in the Environmental Sciences and Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado , USA
8Aerosol Dynamics Inc. , Berkeley , California , USA.
9Aerosol Dynamics Inc. , Berkeley , California , USA ; Department of Environmental Science, Policy, and Management and Department of Civil and Environmental Engineering , University of California , Berkeley , California , USA
10Dept. of Environmental Science, Policy & Management and Dept. of Civil & Environmental Engineering, University of California, Berkeley, California, USA
11Finnish Meteorological Institute, Helsinki, Finland
