[1] CNR, ISAC, I-00185 Rome, Italy
[2] Univ Paris 06, Univ Versailles St Quentin, CNRS, LATMOS, F-75252 Paris 05, France
[3] Deutsch Zentrum Luft & Raumfahrt, Inst Phys Atmosphare, Oberpfaffenhofen, Germany
[4] Forschungszentrum Julich, ICG 1, D-52425 Julich, Germany
[5] Univ Cambridge, European Ozone Res Coordinating Unit, Cambridge, England
[6] Univ Warsaw, Inst Geophys, Warsaw, Poland
[7] Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, Mainz, Germany
[8] Max Planck Inst Chem, Particle Chem Dept, D-55128 Mainz, Germany
[9] Forschungszentrum Karlsruhe, IMK, D-76021 Karlsruhe, Germany
[10] Univ Karlsruhe, Karlsruhe, Germany
[11] Danish Meteorol Inst, Copenhagen, Denmark
[12] CNR, Ist Nazl Ott, Florence, Italy
[13] Ente Nazl Nuove Tecnol Energia & Ambiente, Frascati, Italy
[14] Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA
[15] Univ Grenoble 1, Inst Rech Dev France, LTHE, Grenoble, France
[16] Univ Reims, Grp Spect Mol & Atmospher, Fac Sci, Reims, France
[17] CNRS, Reims, France
[18] Norwegian Inst Air Res, Oslo, Norway
[19] Univ Groningen, Ctr Isotope Res, Groningen, Netherlands
[20] Cent Aerol Observ, Moscow, Russia
[21] Univ Lancaster, Lancaster Environm Ctr, Lancaster, England
[22] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England
[23] CNRS, Lab Meteoreol Dynam, Paris, France
[24] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
[25] Univ Utrecht, Inst Marine & Atmospher Res Utrecht, Utrecht, Netherlands
[26] CNR, Ist Ric Protez Idrogeol, Florence, Italy
[27] Geophys EEIG, Florence, Italy
[28] INERA, Ouagadougou, Burkina Faso
[29] Royal Netherlands Meteorol Inst KNMI, Utrecht, Netherlands
[30] Wuppertal Univ, Wuppertal, Germany
[31] NCAS Climate, Natl Ctr Atmospher Sci, Cambridge, England