[1] Danish Meteorol Inst, Copenhagen, Denmark
[2] Univ Hamburg, Inst Meteorol, Hamburg, Germany
[3] Karlsruhe Inst Technol, Garmisch Partenkirchen, Germany
[4] Barcelona Supercomp Ctr, Barcelona, Spain
[5] Swiss Fed Labs Mat Sci & Technol, Empa, Dubendorf, Switzerland
[6] Paul Scherrer Inst, Villigen, Switzerland
[7] Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52242 USA
[8] Aristotle Univ Thessaloniki, GR-54006 Thessaloniki, Greece
[9] European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England
[10] Commiss European Communities, Joint Res Ctr, Inst Environm & Sustainabil, I-21020 Ispra, Italy
[11] Norwegian Meteorol Inst, Bergen, Norway
[12] NOAA ESRL, Boulder, CO USA
[13] Cent Inst Meteorol & Geodynam, Vienna, Austria
[14] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland
[15] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[16] Univ Tartu, EE-50090 Tartu, Estonia
[17] Univ Athens, Athens, Greece
[18] Univ Hertfordshire, Ctr Atmospher & Instrumentat Res, Hatfield AL10 9AB, Herts, England
[19] Russian State Hydrometeorol Univ, St Petersburg, Russia
[20] ETH, Inst Atmospher & Climate Sci, Zurich, Switzerland
[21] TNO, Utrecht, Netherlands
[22] Italian Natl Res Council, Inst Atmospher Sci & Climate, Bologna, Italy
[23] US EPA, Res Triangle Pk, NC 27711 USA
[24] Met Off, Exeter, Devon, England
[25] Univ Paris Est, Joint Lab Ecole Ponts ParisTech EDF R&D, CEREA, Marne La Vallee, France
[26] Karlsruhe Inst Technol, Eggenstein Leopoldshafen, Germany
[27] N Carolina State Univ, Raleigh, NC 27695 USA