1. NASA Goddard Space Flight Center, Greenbelt, Maryland
2. Environment Canada, King City, Ontario, Canada
3. NASA Wallops Flight Facility, Wallops Island, Virginia
4. University of Illinois at Urbana–Champaign, Urbana, Illinois
5. Colorado State University, Fort Collins, Colorado
6. Jet Propulsion Laboratory, Pasadena, California
7. Environment Canada, Toronto, Ontario, Canada
8. McGill University, Montreal, Quebec, Canada
9. University of Manitoba, Winnipeg, Manitoba, Canada
10. Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, Baltimore, and NASA Goddard Space Flight Center, Greenbelt, Maryland
11. Science Systems and Applications, Inc., Lanham, Maryland
12. National Research Council of Canada, Ottawa, Ontario, Canada