Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Cold pool"”.
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Impacts of cold pool strength on tornado production in quasi-linear convective systems
… several studies have explored the link between cold pool strength and tornadogenesis in quasi-linear convective systems (QLCSs). Novel observations from the Verifications of the Origins of Rotations in Tornadoes Experiment-Southeast (VORTEX-SE) and Propagation, Evolution, and Rotation in Linear …
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Controls of updraft size, cold pool characteristics, and potential tornado intensity in supercell thunderstorms
… initiation, updraft structure, and subsequent cold pool generation are not well understood. This has become particularly relevant with ongoing efforts to introduce cold pool processes in convective parameterization schemes. Here, the structure of supercell updraft width and its connection to …
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An investigation into the effects of CCN on the timing of convective cold pool initiation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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The influence of environmental conditions and cold pool generation on surface-based vs. elevated convection in a nocturnal mesoscale convective system
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Effects of Microphysical Parameterizations and Drop Breakup on Supercells and Supercell Cold Pools.
… parameterizations affect the supercell cold pool and the evolution of storm structure. Using in-situ data gathered by StickNet probes, the simulated cold pool can be objectively verified against the observations. This verification is done over the entire supercell and over the two main …
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Tropical oceanic mesoscale cold pools in observations and models
Convective cold pools over oceans contribute to the atmosphere-ocean exchange of heat and moisture across the globe. Beyond cold pools’ physical properties, cold pools and their intersections are important mechanisms controlling the life cycle of tropical convective systems. However, few …
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Microphysical Influences on cold pools
… convective clouds to the ground can produce cold pools, regions of air at the surface cooled by melting or sublimating ice and/or evaporation of rain within the downdrafts. These cold pools can propagate outward, sometimes initiating new convection along their leading edges. Models operating …
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Mineral dust lofting and interactions with cold pools
… the complex and non-linear interactions between cold pools, dust radiative effects, and land surface processes, and their associated uncertainties in numerical models. In this dissertation, model simulations of real and idealized haboobs are used to address limitations in regional dust modeling, …
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Improving Storm-Scale Analyses of Convection via Assimilation of Polarimetric Radar Observations
… 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, there was an elevated cold pool along the …
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A study of the effect of Lake Erie on deep convective systems
… intensity to the ratio between squall line’s cold pool intensity and the ambient low-level wind shear. Results show that the squall line’s cold pool would have encountered a MBL which became increasing deep and cooler at the surface as it moved east through southern Ontario toward Lake Erie. …
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Understanding tornado intensity in supercells and quasi-linear convective systems
… storm updraft intensity, updraft width, and cold pool intensity, as well as environmental vertical wind shear, are identified as contributors to tornado intensity. Meanwhile, cold pool depth is found potentially to impact tornado formation but may have little impact on tornado intensity. …
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Modeling study of tropical nonsquall and squall clusters
… in the tropics. Two-dimensional simulations with cold-pool dynamics indicate that the simulated convective system propagates as a slow-moving multicellular squall line, in contrast to the nearly stationary observed non-squall convective line. Environmental winds are not included in the …
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Insights into tornadogenesis and tornado dynamics from idealized simulations
… of vertical vorticity generation in the cold pool to the intensification by the low-level updraft is systematically evaluated in CM1. It is found that small changes in both of these parameters can cause a bifurcation between the tornadic and nontornadic cases, demonstrating the …
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Cross-frontal exchange at the US Northeast shelfbreak
… budget of the subsurface continental shelf ‘cold pool’, habitat of the valuable benthic ecosystem, quantifies the contribution of eddy-driven advection to the observed salinity increase and explains the seasonal cycle of watermass variability on the shelf (Chapter 3). However, the multi-year …
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Cross-Frontal Exchange at the US Northeast Shelfbreak
… budget of the subsurface continental shelf 'cold pool', habitat of the valuable benthic ecosystem, quantifies the contribution of eddy-driven advection to the observed salinity increase and explains the seasonal cycle of watermass variability on the shelf (Chapter 3). However, the multi-year …
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Equatorial ocean dynamics impacting upwelling west of the Galápagos Archipelago
The Galápagos Cold Pool (GCP) is a region of anomalously cold sea surface temperature (SST) just west of the Galápagos Archipelago. Modeling studies have shown that the GCP is maintained by wind- and current-driven upwelling. The Galápagos Archipelago lies on the equator, in the path of the Pacific …
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The diurnal cycle of air pollution in the Kathmandu Valley, Nepal
… afternoon westerly winds, and a stagnant cold pool at night. On mountaintops at night, ozone remained high, while CO dropped to regional background levels.
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An Investigation of the Role of Land-Atmosphere Interactions on Nocturnal Convective Activity in the Southern Great Plains
… interactions, nocturnal pre-storm environment, cold pool strength, squall line morphology and propagation speed, and storm rainfall. At the meso-gamma scale, differences in land-cover and soil type have as much of an effect on the simulated pre-storm environment as the choice of PBL …
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INVESTIGATION OF DEAD OCEAN QUAHOGS (ARCTICA ISLANDICA) SHELLS ON THE MID-ATLANTIC BIGHT CONTINENTAL SHELF
… of past regressions and transgressions of the Cold Pool, the bottom-trapped, cool body of water that allows boreal animals to live at lower latitudes. Dead ocean quahog shells were collected offshore of the DelMarVa Peninsula then radiocarbon-dated, evaluated for taphonomic condition, and aged …
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Multi-Scale Atmospheric Dynamics of Extreme Saharan Dust Storms Resulting in Dust Transport Out of Africa to Iberia and the Atlantic
… features including: (a) density current-like cold fronts, (b) undular bores, (c) barrier jets, (d) hydraulic jumps, and (e) mesoscale internal gravity waves. Moreover, we also highlight that the interaction between moisture from the Eastern Atlantic and a residual convective cold pool could …
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