[1] Met Off, Exeter EX1 3PB, Devon, England
[2] CNRS, IPSL, Meteorol Dynam Lab, Paris, France
[3] EUMETSAT, Darmstadt, Germany
[4] NOAA, NESDIS, Camp Springs, MD USA
[5] CNRS, CNRM, GAME, Paris, France
[6] Univ Paris 06, Paris, France
[7] Univ Libre Bruxelles, Brussels, Belgium
[8] Univ Versailles St Quentin, Versailles, France
[9] CNRS, INSU, LATMOS, IPSL, Paris, France
[10] NOAA, NCEP, EMC, IMSG, Camp Springs, MD USA
[11] Univ Paris 12, CNRS, LISA, Paris, France
[12] Univ Paris 07, Paris, France
[13] Natl Ctr Atmospher Res, Boulder, CO 80307 USA
[14] Meteo France, Ctr Meteorol Spatiale, Lannion, France
[15] Dell Inc, Round Rock, TX USA
[16] Univ Leicester, Leicester, Leics, England
[17] Belgian Inst Space Aeron, Brussels, Belgium
[18] Univ Basilicata, DIFA, I-85100 Potenza, Italy
[19] European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England
[20] CNES, Toulouse, France
[21] Univ Maryland Baltimore Cty, Baltimore, MD 21228 USA
[22] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA
[23] NASA, Langley Res Ctr, Hampton, VA 23665 USA