1. Division of Applied Sciences and Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138
2. National Aeronautics and Space Administration (NASA) Goddard Space Flight Center, Greenbelt, MD 20771
3. NASA Ames Research Center, Moffett Field, CA 94035
4. National Oceanic and Atmospheric Administration (NOAA) Aeronomy Laboratory, Boulder, CO 80303
5. Jet Propulsion Laboratory, Pasadena, CA 91109
6. National Center for Atmospheric Research, Boulder, CO 80307
7. Department of Engineering, University of Denver, Denver, CO 80208
8. NOAA Climate Monitoring and Diagnostics Laboratory, Boulder, CO 80303
9. Departments of Earth and Planetary Sciences and Chemistry, Harvard University, Cambridge, MA 02138