1. European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
2. Centre National de la Recherche Scientifique, Paris, France
3. Joint Center for Satellite Data Assimilation, University Corporation for Atmospheric Research, College Park, Maryland
4. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
5. National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, Maryland, and Chapman University, Orange, California
6. Met Office, Exeter, United Kingdom
7. Naval Research Laboratory, Washington, D.C
8. Remote Sensing Systems, Santa Rosa, California
9. Japan Meteorological Agency, Tokyo, Japan
10. China Meteorological Administration, Beijing, China
11. Royal Netherlands Meteorological Institute, De Bilt, Netherlands
12. European Organisation for the Exploitation of Meteorological Satellites, Darmstadt, Germany