Global ETD Search
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Showing 1 to 8 of 8 for “"mesocyclones"”.
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A Case Study of a High-Precipitation Supercell-Bow Echo Transition on 4-5 June 2008
… One of the tornado-producing low-level mesocyclones was sampled by the StickNet array and is compared to previous observations of tornadic and non-tornadic low-level mesocyclones. It is hypothesized that the merger of the nascent supercell with a HP supercell initiated its SBE …
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Low-level curvature shear and supercell thunderstorm behavior
… to issue tornado warnings based on mid-level mesocyclones yields a 50% false alarm rate, indicating that only half of storms with strong mid-level rotation have strong low-level rotation. Recent observational and theoretical work has implied that a possible discriminating factor between storms …
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Internal vs. External Forcings in Supercell Interactions and Their Impact on Storm Morphology and Intensity
… storm simulations produce stronger low-level mesocyclones than the single-cell control case, and low-level mesocyclone intensification is coupled with unsteady downdraft bursts in the forward flank. Downburst-driven, surface-based circulation centers form along the forward flank gust front, …
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An investigation of the development of supercells in the Indiana and Ohio tornado outbreak of 24 August 2016 using a WRF model simulation
… all of the vertical wind shear is below 1 km, mesocyclones do not form via tilting of horizontal vorticity until the storms ingest air from this layer. The storm on the southern end of this cluster becomes a supercell in the simulation around 1700 UTC, after it becomes surface based. Inflow …
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Mesoscale and stormscale ingredients of tornadic supercells producing long-track tornadoes in the 2011 Alabama super outbreak
… conducive to storms with non-cycling (sustained) mesocyclones. 200m horizontal grid spacing simulations have been initialized with the 18 UTC Birmingham/Alabaster, Alabama [KBMX] soundings, taken from an area directly hit by the day’s storms. The simulation yielded a right-moving storm that …
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“If it happened in…” a pseudo-global warming assessment of tropical cyclone tornadoes
… been found to be useful to identify and track mesocyclones in Great Plains supercells, were evaluated for possible applicability to TC spawned tornadoes. The second objective is to determine changes in surrogate TCT generation in future environments under climate change. This is done by …
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The observed relationship between tornado intensity and pretornadic mesocyclone characteristics and environments
Trapp et al. (2017, JAS) used idealized model simulations of supercell thunderstorms to demonstrate support of their hypothesis that wide, intense tornadoes should form more readily out of wide, rotating updrafts. Observational data were used herein to test the generality of this hypothesis, …
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Improving the anticipation of potential tornado intensity across different time scales
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms