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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 270 for “"Southern Ocean"”.
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Optical characterisation of Southern Ocean phytoplankton
Retrieving the optical properties of Southern Ocean (SO) phytoplankton with high confidence is critical to understanding the role of the Biological Carbon Pump (BCP). Satellite-based ocean colour remote sensing radiometry is the only observational capability that can provide synoptic views of upper …
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Aspects of southern ocean transport and mixing
… and quantifying the circulation of the oceans and the driving mechanisms thereof is an important step in developing models which can accurately predict future climate change. In particular, model studies have shown that the spatial variability of diapycnal diffusivity, which represents …
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Lagrangian study of the Southern Ocean circulation
The Southern Ocean is an important region for the sequestration of heat, carbon dioxide and other tracers. The Southern Ocean circulation is typically described in a circumpolarly averaged sense as a Meridional Overturning Circulation (MOC), but the detailed 3-D pathways that make up this …
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Southern Ocean Centennial Oscillations in the CMIP6 Ensemble
The Southern Ocean is a critical component in the global climate system, controlling key fluxes of CO2 and heat between the atmosphere and ocean interior, as well as the formation of water masses. In climate models, centennial-scale oscillations have been noted in key Southern Ocean properties such …
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Jets, mixing, and topography in the Southern Ocean
The Southern Ocean holds a unique place in our planet. It is home to the world’s longest and strongest ocean current, the Antarctic Circumpolar Current (or ACC), which is formed of jets (alternating velocity structures), thought to be significant surface transport barriers. The dynamical processes …
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Phylogeny and phylogeography of four southern ocean petrels
… thesis investigates the phylogeography of four southern ocean petrel species in an attempt to resolve taxonomic uncertainties and phylogeography in these species. A large proportion of petrel and albatross species are listed as threatened under Red List criteria, in many cases as a result of …
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Production and analysis of a Southern Ocean state estimate
A modern general circulation model of the Southern Ocean with one-sixth of a degree resolution is optimized to the observed ocean in a weighted least squares sense. Convergence toward the state estimate solution is carried out by systematically adjusting the control variables (prescribed …
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Wintertime convection and frontal interleaving in the Southern Ocean
The Southern Ocean as defined here is the body of water between the Antarctic Continent and the Antarctic Polar Front, (APF). This ocean is considered important in the global thermodynamic balance of the ocean-atmosphere system because large planetary heat losses are believed to occur at high …
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Revisiting the importance of a Southern Ocean pattern effect
… of Senior & Mitchell (2000) (SM00) argued that Southern Ocean clouds set the evolution of global radiative feedbacks in time and hence, determine climate sensitivity. We revisit their argument in current generation climate models: We quantify the time evolution of local atmospheric stability, …
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Lagrangian studies, circulation and mixing in the Southern Ocean
Oceans play a vital role as one of the major components of Earth's climate system. The study of oceanic processes and the complexity inherent in dynamic ows is essential for understanding their regulatory character on the climate's variability. A key region for the study of such intrinsic oceanic …
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Dispersion of seabirds at sea in the Southern Ocean
… between the species' occurrence and measured oceanographic and meteorological features are inconclusive. Associations with prey are discounted, because of the birds' apparently unspecialized diet and opportunistic feeding. The two species occur in or near sea-ice. Their restriction to this …
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Production and analysis of a Southern Ocean state estimate
A modern general circulation model of the Southern Ocean with one-sixth of a degree resolution is optimized to the observed ocean in a weighted least squares sense. Convergence toward the state estimate solution is carried out by systematically adjusting the control variables (prescribed …
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Wintertime convection and frontal interleaving in the Southern Ocean
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1980.
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Residual overturning circulation and its connection to Southern Ocean dynamics
… for determining whether the Atlantic or Pacific oceans experience deep convection. I used a two layered model and a rectangular single-basin model to show that the basin width, in combination with scalings for the overturning circulation make the overturning relatively weaker in the wider basin, …
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Sea ice thickness and iceberg distribution in the Southern Ocean
… icebergs were randomly distributed both in open ocean and within sea ice. In conclusion, it was found that icebergs do cluster on the scale of typical Autosub missions (~few km). However, there are differences between icebergs in sea ice compared with open water. Therefore, icebergs should be …
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Particle Fluxes in the North-East Atlantic and Southern Ocean
… to obtain a mechanistic understanding<br/>of oceanic processes and their role in regulating atmospheric pCO2. One important mechanism<br/>is the functioning of the biological pump which partitions carbon between the atmosphere and<br/>ocean reservoirs over relevant time scales. Current …
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Carbon export from natural iron fertilisation in the Southern Ocean
It has long been recognised that some oceanic regions have persistently low chlorophyll<br/>levels, even though inorganic nutrients are plentiful. Studies have shown that these<br/>high-nutrient, low-chlorophyll (HNLC) areas are depleted in iron, which is an essential<br/>micronutrient for …
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