On Thursday October 28th, I will be presenting some of my research on TC supercells.
This study aims to understand the environmental and physical mechanisms that lead up to tornadogenesis in a TC supercell. To address certain gaps in the knowledge base, our study uses idealized numerical simulations to run a series of sensitivity tests where TC supercells evolve in different environments. Our working hypotheses are as follows.
- The sea-to-land transition is a crucial factor in TC supercell intensification due to the impacts of a larger diurnal temperature variation and increased surface friction over land.
- The storm-scale processes that lead to updraft rotation are enhanced in supercells that develop in and near dry air intrusions due to (1) localized midlevel evaporational cooling in the typically moist TC environment, and (2) cloud erosion, which leads to increased surface insolation during the day.
As part of our ongoing research, the net effects of these processes are investigated in both maritime and landfalling TCs.
Last week I presented this work in the form of a poster at the Severe Local Storms conference in Denver, CO. Below are the links to my extended abstract and poster.
I welcome any feedback you have.