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 212 for “"Southern Hemisphere"”.
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High-Latitude Southern Hemisphere Climate Variability, Trends, and Tropical Forcing.
… aspects of climate variability in the Southern Hemisphere (SH) high-latitudes, with a focus on the time-varying behaviour and long-term trends in Antarctic sea ice and atmospheric circulation, as diagnosed from observations, reanalyses, and simulations using an Atmospheric General …
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MECHANISMS FOR THE EXISTENCE OF DIAGONAL SOUTHERN HEMISPHERE CONVERGENCE ZONES
This thesis considers the northwest-southeast, diagonal, orientation of the South Pacific and South Atlantic Convergence Zones (SPCZ and SACZ, respectively) which provide vital precipitation locally and influence mean climate globally. Their basic formation mechanism is not fully understood. A …
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Momentum and zonal kinetic energy calculations for the Southern Hemisphere.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1973.
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The biotic effects of tertiary geoclimatic change in the southern hemisphere
… contemporary biogeographic patterns across the Southern Hemisphere, with particular focus on two regions that have experienced elevated levels of ongoing aridification – sub-Saharan (particularly Southern) Africa and Australia. I used standard methods from the molecular phylogeneticists’ toolbox …
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Antarctic sea-ice extent, Southern hemisphere circulation and South African rainfall
… and winter, with emphasis on non-polar and southern African climates. Following an evaluation of the OCM, the control and perturbation simulations are analysed. The controls are forced by prescribed, observed sea surface temperatures (SSTs) and sea-ice extents, while in the perturbation …
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Indirect measurement of the mean meridional circulation in the southern hemisphere
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1964.
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Towards the Total Synthesis of Spirastrellolide E: Investigations into Advanced Southern Hemisphere Fragments
… In particular, the synthesis of advanced southern hemisphere fragments is reported. Chapter 1 details the isolation, structural determination, and biological activity of the spirastrellolide family, as well as synthetic efforts towards members of the family. Chapter 2 describes the …
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Stratospheric ozone and Southern Hemisphere climate change : impacts and robustness in CMIP5 models
… to be the dominant cause of recent observed southern hemisphere (SH) circulation changes during austral summer, along with the consequential impacts on tropospheric climate conditions. Links between ozone depletion and the positive phase of the dominant mode of variability of the southern …
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The meridional flux of water vapor in the southern hemisphere during the IGY.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1967. M.S.
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Mean meridional eddy flux of enthalpy in the Southern Hemisphere during the IGY,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1968.
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Understanding the spatial distribution of the Southern Hemisphere near-surface westerlies and Its trends
… to establish if this bimodality exists in the Southern Hemisphere (SH) near-surface winds, which would predict the existence of an additional mode of tropospheric variability exhibiting stronger and longer-lived responses than what has previously been observed. Histograms of the latitudinal …
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Fish passage design for Southern Hemisphere small-bodied fish: Hydrodynamic and behavioural assessment using spoiler baffles
… our understanding of the behaviour of two Southern-Hemisphere small-bodied species, Galaxias maculatus and Galaxias brevipinnis, during their upstream passage through spoiler baffles. The comparative behavioural assessment, together with the measured hydrodynamic information, is used to …
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Environmental dependence of mass-dimension relationships and investigation of microphysical observations of a southern hemisphere atmospheric river
… the result of a field campaign conducted in the Southern Ocean to collect more observations of boundary layer clouds. For one of the research flights, microphysical observations were collected at various depths within an atmospheric river and represent a unique dataset for Southern Hemisphere …
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The late quaternary history of Southern hemisphere mediterranean climate regions in the Western Cape, South Africa, and Southwestern Australia
The study is focused on four study sites, two in the Western Cape, namely the Bruno section and Lake Michelle and two in southwestern Australia, namely Wambellup Swamp and Devil's Pool. These sites were chosen as they are well situated to investigate the complex interaction between Late Quaternary …
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Exploration of climate mediated decline in a critically endangered southern hemisphere conifer over the last 40 years / Annabelle J. Rogers
Widdringtonia cedarbergensis is a critically endangered conifer restricted entirely to the Cederberg Mountain range in the Western Cape of South Africa. This study aimed to assess whether contemporary climate change could be a driver in the recently documented tenfold decline of W. cedarbergensis …
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Diatoms in Antarctic ice cores, a novel proxy for reconstructing past wind variability in the Pacific sector of the Southern Hemisphere Westerly Wind belt
The Southern Hemisphere Westerly Winds play a critical role in the global climate system by modulating the upwelling and the transfer of heat and carbon between the atmosphere and the ocean. Since observations started, the core of the westerly wind belt has increased in strength and has contracted …
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‘The Paradise of the Southern Hemisphere’: The Perception of New Zealand and the Maori in Written Accounts of German-speaking Explorers and Travellers 1839-1889
The aim of this research is to examine the much neglected body of writings on New Zealand and the Maori by German-speaking explorers and travellers during the colonising period of the 1840s to 1880s. To the nineteenth-century breed of visitor from Germany and Austria, 'Old' New Zealand often …
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The use of stomatal frequency from three Australian evergreen tree species as a proxy indicator of atmospheric carbon dioxide concentration
… field has been conducted on deciduous Northern Hemisphere species including extant and fossil material. Southern Hemisphere fossil species are currently under-represented in the fossil proxy-CO2 database. The rate of climate change in the Southern Hemisphere is less than that experienced in the …
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Patterns and processes in animal evolution : molecular phylogenetics of Southern Hemisphere fauna : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Genetics
… dispersal, extinction and vicariance. The Southern Hemisphere has an intriguing and complicated geological history that provides an ideal backdrop to study these processes. This thesis focuses on three historical events that illustrate these processes: the proposed marine inundation of New …
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The phylogeny, biology and biogeography of the Southern African kelps Ecklonia maxima and Laminaria pallida
… Three genera of kelps are present on the southern African coast: Ecklonia, Laminaria and Macrocystis, of which the first two are ecologically and economically important and the focus of this study. The taxonomy of the genus Ecklonia is investigated. The genus Ecklonia (Phaeophyceae, …
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