Monday, 3 November 2014: 1:45 PM
University (Madison Concourse Hotel)
Prior simulations of mergers between mature and nascent supercells show that during or following certain types of mergers, an intensification in the near-surface vorticity field occurs. This intensification is similar to certain real-world mergers. In order to investigate this further, trajectory and circulation analyses of the simulated mergers are employed to find the reasons for the rapid intensification of low-level vorticity. For rear-flank mergers, the distribution of precipitation during the merger enhances the baroclinic vorticity generation along the trajectories bound for the low-level mesocyclone, but without producing an excessively cold outflow.
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