How permeable is the edge of the arctic vortex- studies of the winter 1999 - 2000 with the 3-dimensional Chemical Lagrangian Model of the Stratosphere (ClaMS) - Steinhorst, H.; Konopka, Paul; Müller, R.; Grooß, J.-U.; Günther, G.; McKenna, D. S. (Soc., 2003)