During the July conference call, I presented preliminary work from a matrix of 12 simulations geared towards exploring the sensitivity of HSLC convection to low-level hodograph shape and the wind profile’s orientation relative to an initiating cold pool. As I focused on only four of the 12 simulations, one of the requests stemming from discussion during the call was to see simulated reflectivity, cold pool, vertical vorticity, and vertical velocity animations in addition to rotation track Hovmoller plots for all 12. These are attached as a set of powerpoint slides at the end of this post, along with a refresher of the hodographs used in this study.
Ultimately, the four “core” simulations discussed during the July conference call (control L-shaped, CCW ball cap, control quarter turn, and control spatula) exhibit the most realistic and representative HSLC convection. However, interesting features are shown in the other simulations, including situations with overrunning convection and shear-parallel bands of convection. Some of the simulations not included in the core set still produce strong near-surface rotation and may be worth future investigation.
Further analysis and discussion, particularly on the four core simulations, is provided in an extended abstract associated with a recent presentation of this work at the AMS Mesoscale Conference. A link to this document will be provided in an upcoming blog.