The Extra-tropical UTLS:
observations, concepts and future directions

Community workshop at NCAR, Boulder, CO
October 19-22, 2009

Bill Randel Atmospheric Chemistry Division National Center for Atmospheric Research PO Box 3000 Boulder, Colorado 80305-3000 USA Tel: 303-497-1439 randel@ucar.edu	Laura Pan Atmospheric Chemistry Division National Center for Atmospheric Research PO Box 3000 Boulder, Colorado 80305-3000 USA Tel: 303-497-1467 liwen@ucar.edu	Andrew Gettelman Atmospheric Chemistry Division National Center for Atmospheric Research PO Box 3000 Boulder, Colorado 80305-3000 USA Tel: 303-497-1887 andrew@ucar.edu
Kenneth P. Bowman Department of Atmospheric Sciences Texas A&M University 3150 TAMU College Station, TX 77843-3150 Tel: 979-845-7671 k-bowman@tamu.edu	Peter Hoor Department of Atmospheric Chemistry Max Planck Institute for Chemistry P.O.Box 3060 D-55020 MAINZ Germany Tel: +49 6131 305329 peter.hoor@mpic.de	Valérie Thouret CNRS (UMR 5560) Laboratoire d'Aérologie OMP, 14 Avenue E. Belin 31400 Toulouse - France Tel: +33 (0) 5 61 33 27 40 Valerie.Thouret@aero.obs-mip.fr