University of Washington, Department of Atmospheric Sciences, Box 351640, Seattle, WA 98195, United States
University of Washington - Bothell, Department of Interdisciplinary Arts & Sciences, 18115 Campus Way NE, Bothell, WA 98011, United States
National Oceanographic & Atmospheric Administration, Earth Science Research Laboratory (ESRL), Global Monitoring Division (GMD), 325 Broadway, Boulder, CO 80303, United States
National Center for Atmospheric Research, Atmospheric Chemistry Division, 3450 Mitchell Lane, Boulder, CO 80301, United States
Harvard University, Department of Earth & Planetary Science, 29 Oxford St, Cambridge, MA 02138, United States