Ozone Loss, Chlorine Activation and Denitrification in the Arctic Polar Vortex 2004/2005: in Situ Observations and Model Results - von Hobe, M.; Grooß, J.-U.; Ulanovski, A.; Volk, C. M.; Günther, G.; Konopka, Paul; Tilmes, S.; Werner, A.; Müller, R.; Stroh, F. (2005)