Global ETD Search
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Showing 1 to 7 of 7 for “"gust front"”.
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The Effect of The Gust Front on The Generation of New Convection
The importance of gust fronts in triggering new storm development is widely recognized. A three-dimensional numerical cloud model developed by Klemp and Wilhelmson is used to study the relationship of new convection to previously generated gust fronts. The model has been modified with a vertically …
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The Numerical Simulation of Thunderstorm Outflow Dynamics (Gust Front, Kelvin-Helmholtz Instability, Wind Shear, Microbursts)
Two high-resolution, two-dimensional numerical models are developed and used to investigate the dynamics of thunderstorm outflows. The first model employs the set of unapproximated, inviscid, fully compressible hydrodynamical equations, while the second, more economical model is based on a …
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Improving Storm-Scale Analyses of Convection via Assimilation of Polarimetric Radar Observations
… polarimetric field evolution relative to surface gust front behavior. A strong but compact cold pool was found on the upshear side of the storm. However, an intriguing discovery was the lack of significant cooling at the surface within the forward flank downdraft region of the storm. Instead, …
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Internal vs. External Forcings in Supercell Interactions and Their Impact on Storm Morphology and Intensity
… circulation centers form along the forward flank gust front, propagate toward the main updraft, and are stretched immediately prior to mesocyclogenesis events. These discrete rotation centers are approximately one kilometer deep and would most often be unobserved by operational radar. The external …
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Tropical squall lines of the Arizona monsoon.
… low-level convergence found just ahead of the gust front appeared to cause several episodes of discrete propagation. The creation of horizontal potential temperature gradients and the vertical and horizontal advection of preexisting vorticity gradients combined to produce the vorticity field …
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Effects of Microphysical Parameterizations and Drop Breakup on Supercells and Supercell Cold Pools.
… generated vorticity along the rear-flank gust front. As the supercell goes through a mesocyclone replacement cycle the ensembles with the varying and more accurate drop breakup thresholds produce a stronger new updraft and mesocyclone that is closer to what was observed. The ensemble …
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Střih větru jako nebezpečný jev v letectví
Práce pojednává o střihu větru a jeho vlivu na leteckou dopravu. Ten je rozebrán na teoretické úrovni a uveden do praxe v letecké dopravě. Jsou zde zmíněny metody pozorování, predikce, hlášení střihu větru i doporučené postupy pro piloty, kteří střihem větru prolétají. V práci jsou modely počasí, …