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.
Results
Showing 1 to 20 of 124 for “"ocean-atmosphere"”.
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An ocean-atmosphere energy climate model
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1980.
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Global thermohaline circulation and ocean-atmosphere coupling
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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Oceanic planetary waves in the coupled ocean-atmosphere system
… wave is coupled to different thermodynamical atmospheres, from a simple heat flux condition to the inclusion of an atmospheric energy balance model. The effects on the vertical structure and phase speed of the first modes are negligible. However, it is shown that for the latter case an …
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Thermohaline circulation stability in a copuled land-ocean-atmosphere box model
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1998.
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Ice - ocean - atmosphere interactions in the Southern Ocean and implications for phytoplankton phenology
… advance and retreat of sea ice in the Southern Ocean is recognised as one of the largest seasonal events on Earth. Such considerable physical changes have profound effects on the vertical structure of the water column, and hence controls the availability of both light and nutrients to …
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The structure of the upper ocean, atmosphere and heat fluxes - Tropical Indian Ocean
Sea surface temperatures in the tropical Indian Ocean have been shown to be inversely related to South African summer rainfall, making advanced predictions of this rainfall practicable. Such predictability has enormous potential economic benefits. However, these predictions have been purely …
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Physical Oceanographic Controls on Biological Production and Ocean-Atmosphere Carbon Flux in the North Pacific
… annually, accounting for only about 15-20% of oceanic carbon uptake through temperature-driven solubility changes.</p><p>This second study again finds an important role for lateral processes to play in regulating biogeochemical phenomena in the North Pacific transition zone. The ability of the …
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Sea surface temperature-rainfall relationships and associated ocean-atmosphere coupling mechanisms in the southern African region
… sea surface temperature variability (SST) of the oceans surrounding southern Africa and summer rainfall variations over South Africa are investigated using statistical, observational and mechanistic approaches. Positive correlations are identified between summer rainfall and SSTs of the …
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Sensitivity study and stability analysis of the Marotzke and Stone ocean-atmosphere model under buoyancy and energy constraints
The oceanic circulation plays a significant role in earth's climate by transporting heat polewards. Here the ocean's thermohaline circulation is studied using the Marotzke and Stone four box ocean-atmosphere model under both the buoyancy constraint proposed by Stommel and the energy constraint …
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A multi-scale assessment of aquatic ecosystem processes across the land-ocean-atmosphere continuum: from headlands to the sea
… in a globally-relevant flux of CO2 to the atmosphere. I examined the complex sequence of processes resulting in fluvial carbon fluxes at various spatiotemporal scales in a range of latitudinal settings, from small streams in the Pacific Northwest and coastal Brazil to the mouth of the …
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Tropical cyclones in the South-West Indian Ocean : intensity changes, oceanic interaction and impacts
… the climatology, intensification and ocean atmosphere interaction in relation to the passage of tropical cyclones (TCs) in the South-West Indian Ocean (SWIO). A Climatology of TCs in the SWIO including landfall in the area of Mozambique and Madagascar was developed for the 1952-2007 …
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A DNS capability for obtaining underwater light field and retrieving upper ocean conditions via in-water light measurements
Predicting the ocean surface conditions (surface elevation, temperature, wind speed, etc.) becomes more and more important for both real life and military applications. This thesis presents a direct numerical simulation (DNS) capability of solving complicated natural light field patterns in the …
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Inter-annual variability of acoustic ray travel times in the northeast Pacific
… understanding of them will increase knowledge of ocean-atmosphere interactions which affect weather and climate. A discussion of the program for finding the travel times is included along with a comparison of two methods of measuring travel times.
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Understanding the role of stochastic atmospheric forcing in tropical Pacific decadal variability and ENSO modulation
… of stochastic atmospheric forcing by the ocean mixed layer. However, it remains unclear how the extratropical signal propagates into the tropical Pacific and forms a basin-wide anomaly pattern and how the resultant tropical Pacific decadal variability (TPDV) interacts with the El …
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The effect of large-scale interannual variations in the Gulf of Guinea
… and the exact coupling mechanism with the atmosphere. Here, I present the results of temperature advection, variability of the Equatorial Undercurrent (EUC) in relation to atmospheric forcing, influence of Gulf of Guinea sea surface temperature (SST) to rainfall variability over West Africa …
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Modeled sensitivity of the northwestern Pacific upper-ocean responses to tropical cyclones in a fully coupled climate model with varying ocean grid resolution
… fully-coupled models. Here we analyze the upper-ocean response to TCs using a high resolution Earth system model, in which a 0.5° atmosphere is coupled to an ocean with two different horizontal resolutions: 1° and 0.1°. The model produces realistic TCs up to category 3 in both versions of the …
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On the role of the Agulhas Current on weather and climate of South Africa
… of this thesis is to understand the impact of ocean-atmosphere interaction in the Agulhas Current on the atmosphere and to investigate its importance for Southern African rainfall. This warm Current creates a high temperature gradient with the surrounding ocean, leading to a large turbulent …
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Classification of summertime West Coast fog and stratus events and the development of fog and stratus forecast techniques
… evolution. The Navygass mesoscale model, coupled ocean/atmosphere mesoscale prediction system (COAMPS), provided detailed simulation of 11 events to highlight the boundary layer evolution and its relationship to fog and stratus evolution. The fog and stratus classification scheme produced several …
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Large-scale dynamic observation planning for unmanned surface vessels
… Scout unmanned surface vessel (USV) and NASA's Ocean-Atmosphere Sensor Integration System (OASIS) USV. These USVs are well-suited to complete monotonous, dangerous, and time-consuming missions. The USVs provide better performance, lower cost, and reduced risk to human life than manned systems. …
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On the warm bias along the South-West African Coast in coupled models : an oceanic perspective
Coupled ocean/atmosphere simulations exhibit systematicwarm biases over the SouthWest African (SWA) coastal region. Recent investigations indicate that coastal ocean dynamics may play an important role in determining the SST patterns, but none of them provide a detailed analysis. In this study, I …
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