Simulation of the Inward Breaking Vortex Event Observed During the Polar Aura Validation Experiment

During the Polar Aura Validation Experiment, a vortex intrusion was observed by the AROTAL ozone lidar aboard the NASA DC-8 on January 31, 2004. This intrusion is associated with a rare inward breaking event similar to that observed during AASE II and discussed by Plumb et al. [1994]. This event was also seen by Aura's MLS in both ozone and N2O. This paper reports chemical transport model and RDF trajectory simulations of the event using various resolution models. The event provides a good test case of the quality of polar stratospheric chemical and dynamical assimilations.