[1] Aerodyne Res Inc, Ctr Aerosol & Cloud Chem, Billerica, MA 01821 USA
[2] Univ Cambridge, Ctr Atmospher Sci, Dept Chem, Cambridge CB2 1EP, England
[3] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada
[4] Paul Scherrer Inst, Lab Radiochem & Environm Chem, CH-5232 Villigen, Switzerland
[5] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA
[6] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA
[7] Univ Lyon 1 2, IRCELYON, Inst Rech Catalyse & Environm Lyon, CNRS UMR 5256, F-69626 Villeurbanne, France
[8] Augsburg Coll, Minneapolis, MN 55454 USA
[9] Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland
[10] Univ Manchester, Ctr Atmospher Sci, Sch Earth Atmospher & Environm Sci, Manchester M13 9PL, Lancs, England
[11] Max Planck Inst Chem, Biogeochem Dept, D-55128 Mainz, Germany
[12] Paul Scherrer Inst, Lab Atmosphaerenchem, OFLA008, CH-5232 Villigen, Switzerland
[13] Weizmann Inst Sci, Dept Environm Sci, IL-76100 Rehovot, Israel
[14] Univ Vienna, Fac Phys, A-1090 Vienna, Austria
[15] Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80305 USA
[16] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland
[17] Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Galway, Ireland