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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 37 for “"convective systems"”.
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Dynamic models for convective systems.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1966. Ph.D.
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Inertial stability and mesoscale convective systems.
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Development of tropical cyclones from mesoscale convective systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
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Long-lived mesoscale convective systems over Eastern South Africa
… Africa have often focused on synoptic-scale systems such as cut off lows, tropical extratropical cloud bands, and tropical cyclones, with little attention placed on the smaller mesoscale convective systems (MCSs). On a global scale, MCSs are not only important as key rainfall producers, but …
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Understanding tornado intensity in supercells and quasi-linear convective systems
… focuses on tornadoes produced by quasi-linear convective systems (QLCSs), which generally are weak and short-lived, but have a high societal impact due to their proclivity to develop over short time scales, within the cool season, and during nighttime hours. Precisely why they are weak and …
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A study of the effect of Lake Erie on deep convective systems
… boundary layer (MBL), have on pre-existing convective storms which propagate over the water surface. To do this, data collected from the 2001-2007 period was analyzed to identify trends in storm behavior over Lake Erie based on season, time of day, convective type and changes in …
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Impacts of cold pool strength on tornado production in quasi-linear convective systems
… 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 Storms (PERiLS) field campaigns have allowed …
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Radar and model-based studies of mesovortices in cool-season quasi-linear convective systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Observed microphysical characteristics and inferred thermodynamic processes contributing to the structure, evolution, and maintenance of nocturnal elevated mesoscale convective systems
… aircraft across various regions of six mesoscale convective systems (MCSs) at multiple stages of system development. These spirals sampled MCSs corresponding to various archetypes, including several conforming to the classic leading-line/trailing-stratiform mode, and others conforming to the …
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Numerical simulations of mesoscale convective systems: techniques for comparison with observations and a high resolution analysis of flow patterns in the convective region and transition zone of a simulated mcs
… of weather phenomena, such as mesoscale convective systems (MCSs). The Bow Echo and Mesoscale Convective Experiment (BAMEX) provides a multi-sensor, high-resolution dataset that can be used for such comparisons. In Chapter 2 of this work, airborne radar observations taken during the 9-10 …
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The role of land-atmosphere and aerosol interactions on meso-scale convective weather systems across West Africa
… and aerosol interactions on meso-scale convective systems across the sub-Saharan West Africa region, and aims at providing a value-added contribution towards better understanding of the controlling mechanisms for these interactions, in order to improve predictability of the highly …
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Developing A Global, Multi-decadal (1983-2017) Convection Tracking Database Utilizing ISCCP HXG Data
<p>Deep convective systems play a crucial role in Earth's climate system, yet tracking their behavior over large spatial and temporal scales remains challenging. This study introduces a new global convection tracking database spanning July 1983 to June 2017, developed using the ISCCP H-Series …
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A multi-scale modeling study of the impact of land surface heterogeneity on the convective boundary layer in the U.S. Midwest
… Low Level Jet (LLJ); passing of meso-scale convective systems, which is influenced by the unique nature of air-mass mixing over the region; and the effect of high vegetation and soil moisture that enhances the lower level moisture flux over the region. This dissertation research investigated …
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Dusty gust fronts and their contributions to long-lived convection in West Africa/
… behavior of West African storms and mesoscale convective systems (MCSs), we must understand the life cycle of gust fronts, which invariably accompany thunderstorms and often initiate them. In this thesis, I track 40 gust fronts observed during summer 2006 by the MIT radar in Niamey, Niger and …
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Convective Transport of Tropical Marine Boundary Layer Species into the Upper Troposphere and Relation to Species Lifetime: In Situ Measurements and Global Model Simulation
… upper troposphere (UT) using data from the Convective Transport of Active Species in the Tropics (CONTRAST) Experiment conducted over the tropical western Pacific during January and February of 2014. Fifty-five chemical species measured during the CONTRAST campaign are analyzed with …
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Source air feeding convection within a nocturnal mesoscale convective system during the evolution from surface-based to elevated convection
… the mechanisms that allow nocturnal mesoscale convective systems (MCSs) to persist are still not well understood. On 9 August 2014 at approximately 2000 UTC, a regime of upslope flow owing to a weak shortwave impulse in the lee of the Rocky Mountains spawned a convective complex near the …
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Terrain and Landcover Effects of the Southern Appalachian Mountains on the Low-Level Rotational Wind Fields of Supercell Thunderstorms
… of complex terrain on large severe weather systems such as multicell convective systems and squall lines, but research is lacking investigating this same relationship for smaller-scale severe weather phenomena like supercells and tornadoes. This study examines how complex terrain may have …
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Idealized modeling of the role of stability and shear on mesoscale gravity wave evolution
… layer at the surface either behind Mesoscale Convective Systems (MCSs) in summer or over warm frontal surfaces behind elevated convection in winter. MGWs are associated with damaging winds, moderate to heavy precipitation, and occasional heat bursts at the surface. The forcing mechanism for …
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Dependence of tropical cirrus clouds on sea surface temperature and consequences for the Archean climate
… climate of the Archean using a simple radiative-convective model that includes the effect of the variations in the area of thin cirrus clouds. First, we look at the variation in area of upper level clouds using TRMM VIRS (Tropical Rainfall Measuring Mission, Visible Infrared Sounder) data. We …
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Determining Best Method For Estimating Observed Level Of Maximum Convective Detrainment Based On Radar Reflectivity
<p>Convective mass transport is the transport of mass from near the surface up to the upper troposphere and lower stratosphere (UTLS) by a deep convective updraft. This transport can alter the chemical makeup and water vapor balance of the UTLS, which can affect cloud formation and the radiative …
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