1. Department of Atmospheric Sciences Texas A&M University College Station TX USA
2. Department of Atmospheric Sciences University of Washington Seattle WA USA
3. Department of Environment and Climate Sciences Brookhaven National Laboratory Upton NY USA
4. Department of Applied Physics and Mathematics Columbia University and NASA Goddard Institute for Space Studies New York City NY USA
5. Department of Atmospheric and Oceanic Sciences University of Colorado and Laboratory for Atmospheric and Space Physics Boulder CO USA