1. Department of Atmospheric Sciences and the Institute for Environmental Studies, University of Washington, Seattle, WA 98195
2. Environmental Chemistry Division, Brookhaven National Laboratory, Upton, NY 11973
3. Atmospheric Sciences Department, Pacific Northwest Laboratory, Richland, WA 99352
4. Institute for Terrestrial and Planetary Atmospheres, State University of New York, Stony Brook, NY 11794-2300
5. Department of Atmospheric Sciences, Oregon State University, Corvallis, OR 97331-2209
6. Goddard Institute for Space Studies, National Aeronautics and Space Administration, 2880 Broadway, New York, NY 10025
7. Climate Monitoring and Diagnostics Laboratory, National Oceanic and Atmospheric Administration 325 Broadway, Boulder, CO 80303-3328