1. Chemical Sciences Division; Earth System Research Laboratory, NOAA; Boulder Colorado USA
2. Department of Atmospheric Sciences; University of Washington; Seattle Washington USA
3. Department of Environmental Sciences; University of Virginia; Charlottesville Virginia USA
4. Institute for the Study of Earth Oceans and Space; University of New Hampshire; Durham New Hampshire USA
5. Department of Chemistry; Appalachian State University; Boone North Carolina USA
6. Cooperative Institute for Research in Environmental Sciences; University of Colorado; Boulder Colorado USA
7. Department of Chemistry; Memorial University; St. Johns Newfoundland Canada
8. Department of Chemistry; University of Toronto; Toronto Ontario Canada
9. Department of Environmental Sciences; University of California; Riverside California USA
10. Environmental Engineering Department, Faculty of Engineering and Architecture; Abant Izzet Baysal University; Bolu Turkey
11. Atmospheric Chemistry Division, Earth System Laboratory; National Center for Atmospheric Research; Boulder Colorado USA
12. Department of Earth System Science, School of Physical Sciences; University of California, Irvine, California, USA