Descent and mixing in the 1999-2000 Arctic vortex : simulations with the-dimensional chemical Lagrangian model of the stratosphere (CLaMS) - Konopka, Paul; Steinhorst, H.-M.; Grooß, J.-U.; Müller, R.; McKenna, D. S.; Elkins, J. W.; Schmidt, U.; Toon, G. (2002)