Journal ArticleDOI
The Role of Convectively Generated Rear-Inflow Jets in the Evolution of Long-Lived Mesoconvective Systems
TLDR
In this article, the structure of convectively generated rear-inflow jets and their role in the evolution of long-lived mesoconvective systems are investigated through an analysis of idealized three-dimensional simulations using a nonhydrostatic cloud model.Abstract:
In this study, the structure of convectively generated rear-inflow jets and their role in the evolution of long-lived mesoconvective systems are investigated through an analysis of idealized three-dimensional simulations using a nonhydrostatic cloud model. Rear-inflow jets are generated within these systems in response to the upshear-tilting of the convective circulation, as the horizontal buoyancy gradients along the back edge of the expanding system create a circulation that draws midlevel air in from the rear. Within this framework, a wide range of rear-inflow strengths and structures are produced, depending on the magnitude of the ambient convective available potential energy (CAPE) and the vertical wind shear. In general, for environments characterized by weak-to-moderate vertical wind shear and weak-to moderate CAPE, the rear-inflow jet descends and spreads along the surface well behind the leading edge of the gust front, and the subsequent convective activity becomes weaker. However, for e...read more
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Journal ArticleDOI
The resolution dependence of explicitly modeled convective systems
TL;DR: In this article, the authors investigate the effects of grid resolution on convective processes using a nonhydrostatic cloud model to help clarify the capabilities and limitations of using explicit physics to resolve convection in mesoscale models.
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“A Theory for Strong Long-Lived Squall Lines” Revisited
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Examination of Derecho Environments Using Proximity Soundings
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Low-Level Mesovortices within Squall Lines and Bow Echoes. Part II: Their Genesis and Implications
TL;DR: In this paper, the authors proposed a fundamental explanation of the genesis, structure, and implications of low-level, meso-g-scale vortices within quasi-linear convective systems (QLCSs) such as squall lines and bow echoes.
Journal ArticleDOI
Low-Level Mesovortices within Squall Lines and Bow Echoes. Part I: Overview and Dependence on Environmental Shear
TL;DR: In this paper, the authors proposed fundamental explanations of the genesis, structure, and implications of low-level meso-g-scale surface vortices within quasi-linear convective systems (QLCSs) such as squall lines and bow echoes.