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Colloquium

Department of Atmospheric Science

Thur., Oct. 11, 3:10 pm, EN6085

Deep Convective Storms over Heterogeneous Coastal Regions

Dr. Kelly Lombardo

University of Connecticut

Abstract

This presentation will focus on the dynamics of warm season organized deep convective storms as they respond to coastal heterogeneities, such as the marine atmospheric boundary layer (MABL) and coastal terrain. As storms move over and interact with these features, storm intensity, structure, and lifetime are impacted. Upon interacting with a MABL, storm response is dependent on the relative buoyancy between the MABL and storm cold pool, as well as the timing of the collision between the two in a storm’s lifecycle. Furthermore, the presence of a stable boundary layer is not always a detriment to storm survival, and at times can contribute to enhanced storm intensity. As storms move over topographic relief, they respond to the resultant changes in ambient instability and vertical wind shear. Their cold pools also respond to the ascending and descending sloping surfaces, impacting storm-scale physical processes and storm characteristics. In this presentation, I will discuss recent research results quantifying the impact of the MABL, terrain, and the combined impact of both on organized deep convective storms.

 


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