1. Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
2. Department of Earth and Environmental Sciences University of Michigan Ann Arbor MI USA
3. Department of Atmospheric and Oceanic Sciences University of Colorado Boulder Boulder CO USA
4. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder CO USA
5. NASA Goddard Institute for Space Studies New York NY USA
6. Department of Applied Physics and Applied Mathematics Columbia University New York NY USA