1. Department
of Meteorology, Pennsylvania State University, University Park, Pennsylvania 16802, United States
2. Cooperative
Institute for Research in the Environmental Sciences and Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, United States
3. Earth
Systems Research Center, Institute for the Study of Earth Oceans and
Space, University of New Hampshire, Durham, New Hampshire 03824, United States
4. Atmospheric
Chemistry Division, National Center for Atmospheric Research (NCAR), Boulder, Colorado 80307, United States
5. School of
Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
6. Geophyiscal
Fluid Dynamics Laboratory, National Oceanic and Atmospheric Administration, Princeton, New Jersey 08540, United States
7. Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, United States
8. Chemical
Sciences Division, Earth System Research Lab, National Oceanic and Atmospheric Administration, Boulder, Colorado 80305, United States
9. Air Resources
Laboratory, National Oceanic and Atmospheric Administration, College Park, Maryland 20740, United States
10. Institute
of Ion Physics and Applied Physics, University of Innsbruck, 6020 Innsbruck, Austria