NASA Goddard Space Flight Center, Greenbelt, MD
Space Scientist
NASA Headquarters, Washington, D.C. Manger, Atmospheric Chemistry Modeling and Analysis Program
Director of the Research Division, Office of Earth Science
Director of Research and Analysis Program, Earth-Sun System Division
Associate Director for Research, Earth Science Division
NASA Representative Co-chair, Advisory and Oversight Panel of the Coordinated Enhanced Observing Period (CEOP)
Executive Committee, Oceans.US
Joint Subcommittee on Ocean Science and Technology
Steering Committee, Global Climate Observing System
Senior Users’ Advisory Group for the National Polar Orbiting Operational Environmental Satellite System
Acting Chair, U.S. Climate Change Science Program (CCSP)
