Simon Alexander¹, Greg M McFarquhar², Alain Protat³, Roger Marchand⁴, Gerald G Mace⁵, Etienne Vignon⁶ and Andrew R Klekociuk¹, (1)Australian Antarctic Division, Kingston, TAS, Australia, (2)Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States, (3)Bureau of Meteorology, Melbourne, Australia, (4)University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States, (5)Univ Utah, Salt Lake City, UT, United States, (6)LGGE Laboratoire de Glaciologie et Géophysique de l’Environnement, Saint Martin d'Hères, France