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 11 of 11 for “"Tropical cyclogenesis"”.
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Spontaneous tropical cyclogenesis in a cloud revolving numerical model
In this thesis, spontaneous tropical cyclogenesis occurring in a cloud-resolving numerical model is studied. The model environment is one of radiative convective-equilibrium on an f-plane with doubly periodic boundary conditions and constant sea surface temperature. While a variety of initial …
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Multi-scale interactions leading to tropical cyclogenesis in sheared environments
To be, or not to be, that is the question of tropical cyclogenesis. Only a small fraction of tropical disturbances eventually develop into tropical cyclones (TCs). Accurate forecasts of tropical cyclogenesis are difficult because TC development involves a wide range of scales from the stochastic …
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Global omega equation: derivation and application to tropical cyclogenesis in the north Atlantic Ocean
… omega equation is applied to the problem of tropical cyclogenesis in the Atlantic Ocean. The omega fields are used to compare those disturbances that eventually undergo cyclogenesis with those that dissipate. Composite analysis is employed and, in order to account for the different regional …
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THE APPLICATION OF THE MARSUPIAL AND ROTATING CONVECTION PARADIGMS TO UNDERSTANDING THE TROPICAL CYCLOGENESIS AND INTENSIFICATION OF HURRICANE MICHAEL (2018)
… of the protective “pouch” that supported tropical cyclogenesis and also the principal dynamic elements of the intensification in the Caribbean Sea and Gulf of Mexico before making landfall in Mexico Beach, Florida. Hurricane Michael’s genesis was unique, occurring near land under complex …
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Atlantic tropical cyclone formation: Pre-genesis evolution of tropical easterly waves and impacts of the middle to upper tropospheric dry air
… of the dynamic and thermodynamic evolution of tropical easterly waves (TEWs) for 164 named tropical storms over the Atlantic during 1989-2010 July-October. The evolution of precipitation and the low-level convergence suggests that convection begins to organize near the center of the wave …
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Midlevel ventilation's constraint on tropical cyclone intensity
… flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a TC's intensity. An idealized framework is developed to assess how ventilation affects TC intensity via two pathways: downdrafts outside the …
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An analysis of a developing and non-developing disturbance during the predict experiment
… the role of dry air in moist convection during tropical cyclogenesis. The circulation and vorticity dynamics of Karl are used to describe the system-scale spin-up within the marsupial paradigm frame-work. The circulation tendency shows that Karl underwent periods of spin-up and spin-down until …
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Investigation of the positive interaction between the primary and secondary circulation and the roles of different types of precipitation in tropical cyclone formation
Our understanding of tropical cyclogenesis, one of the greatest mysteries in tropical meteorology, has advanced significantly in the past few decades, partly owing to the availability of satellite data and high-resolution numerical model simulations. This research investigates the coupling among …
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A case study of the formation of an Eastern Pacific tropical cyclone
… study is performed to investigate the nature of tropical cyclogenesis in the eastern Pacific Ocean. Focus is given to the formation and development of the initial circulation which eventually intensified into Hurricane Fefa. Using satellite imagery, the author studies the development of …
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Wave-driven geomorphology of Pacific carbonate coastlines: from landscape to wavelength scale
… threatens to inundate low-lying reef islands, tropical cyclone intensification threatens islands with flooding and erosion, and ocean warming and acidification threaten the health of coral reefs. Unfortunately, the sediment dynamics that shape the morphology of coral reefs and atoll reef …
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Horizontal vorticity redistribution and vortex alignment in developing and mature tropical cyclones
… a vortex is examined here in the context of tropical cyclone (TC) structure and intensity change. Aspects of the horizontal vorticity mixing dynamics are first presented in a novel analysis of high temporal resolution wind fields derived from airborne dual-Doppler observations of Hurricane …