[1] UPEC, CNRS, LISA, INSU,UMR7583, Paris, France
[2] CNRS, Lab Aerol, UMR5560, Toulouse, France
[3] Univ Toulouse, Toulouse, France
[4] CNR, Inst Atmospher Sci & Climate, I-40126 Bologna, Italy
[5] Univ Cologne, Rhenish Inst Environm Res, D-50931 Cologne, Germany
[6] European Ctr Medium Range Weather Forecasting, Reading, Berks, England
[7] Inst Natl Environm Ind & Risques, INERIS, Verneuil En Halatte, France
[8] Ecole Polytech, Meteorol Dynam Lab, IPSL, Palaiseau, France
[9] Meteo France, Ctr Natl Rech Meterol, Toulouse, France
[10] Aristotle Univ Thessaloniki, Lab Atmospher Phys, Thessaloniki, Greece
[11] FZ Julich, Inst Chem & Dynam Geoshere Troposphere 2, Julich, Germany
[12] Norwegian Meterol Inst, Oslo, Norway
[13] Italian Natl Agcy New Technol Energy & Sustainabl, Bologna, Italy