Influence of interactive stratospheric chemistry on large-scale air mass exchange in a global circulation model
Alfred-Wegener Institute for Polar and Marine Research - Research Unit Potsdam, Telegrafenberg A43, 14473 Potsdam, Germany
2 Center for Dynamics of Complex Systems at the University of Potsdam, Karl-Liebknecht-Str. 24, 14476 Potsdam, Germany
3 Potsdam Institute for Climate Impact Research, Telegrafenberg A31, 14473 Potsdam, Germany
Corresponding author: email@example.com
A new globally uniform Lagrangian transport scheme for large ensembles of passive tracer particles is presented and applied to wind data from a coupled atmosphere-ocean climate model that includes interactive dynamical feedback with stratospheric chemistry. This feedback from the chemistry is found to enhance large-scale meridional air mass exchange in the northern winter stratosphere as well as intrusion of stratospheric air into the troposphere, where both effects are due to a weakened polar vortex.
© EDP Sciences, Springer-Verlag, 2009