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Showing 1 to 20 of 37 for “"Atlantic Meridional Overturning Circulation"”.
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Decadal variability of the Atlantic Meridional Overturning Circulation
In the mean, the Atlantic Ocean transports 1 to 1.5 PW of heat northward, and estimates suggest that 60% of this heat transport is associated with a circulation that reaches the cold waters of the abyss. Due to the role of the Atlantic Meridional Overturning Circulation (AMOC) in ocean heat …
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Constraining variability of the Atlantic Meridional Overturning Circulation at 25N from historical observations, 1980 to 2005
The Atlantic Meridional Overturning Circulation (MOC) plays an important role in<br/>maintaining western Europe’s moderate climate. Although expected to weaken under<br/>increasing greenhouse gas concentrations, the magnitude of the response remains<br/>uncertain. Monitoring of the Atlantic MOC …
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Long-term variability and change of the Atlantic Meridional Overturning Circulation in a hierarchy of climate models
L'abstract è presente nell'allegato / the abstract is in the attachment
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Meltwater injections and their impact on Atlantic meridional overturning circulation and climate during the time period of Heinrich Event 1 and the last deglaciation
… relationship between meltwater injections, North Atlantic Deep Water<br/>(NADW) formation and climate change (i.e., the long term change in the average<br/>weather), a high-resolution magnetic (?ARM/?) proxy record of NADW flow<br/>intensity from Eirik Drift, south of Greenland, is presented. A …
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Hydrographic structure of overflow water passing through the Denmark Strait
… (DSOW) constitutes the densest portion of North Atlantic Deep Water, which feeds the lower limb of the Atlantic Meridional Overturning Circulation (AMOC). As such, it is critical to understand how DSOW is transferred from the upstream basins in the Nordic Seas, across the Greenland-Scotland …
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Hydrographic structure of overflow water passing through the Denmark Strait
… (DSOW) constitutes the densest portion of North Atlantic Deep Water, which feeds the lower limb of the Atlantic Meridional Overturning Circulation (AMOC). As such, it is critical to understand how DSOW is transferred from the upstream basins in the Nordic Seas, across the Greenland-Scotland …
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The Gulf Stream: along-stream evolution of volume transport and water properties observed by underwater gliders
… boundary current of the subtropical North Atlantic, plays a key role in the Earth’s climate system with its poleward volume and heat transports being major components of the upper limb of the Atlantic Meridional Overturning Circulation. Extensive observations collected using Spray …
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Vertical Structure of Propagating Features
… variability of the western boundary North Atlantic 26.5 ?N region has been central in the observations of the strength and structure of the Atlantic Meridional Overturning Circulation (AMOC). Interest in this work began when some recent work estimated the inter-annual fluctuations of the …
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Evaluation of an eddy resolving HYCOM simulation in the South Atlantic Ocean
The South Atlantic Ocean acts as a key region of ocean teleconnections and water mass transformation, directly transporting waters from the Southern, Pacific and Indian Oceans towards the North Atlantic and feeding the upper branch of the Atlantic Meridional Overturning Circulation. To date, this …
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The Gulf Stream: Along-stream evolution of volume transport and water properties observed by underwater gliders
… boundary current of the subtropical North Atlantic, plays a key role in the Earth’s climate system with its poleward volume and heat transports being major components of the upper limb of the Atlantic Meridional Overturning Circulation. Extensive observations collected using Spray …
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Investigating Mexican paleoclimate with precisely dated speleothems
… climate mean states, and is subject to drying as Atlantic Meridional Overturning Circulation weakens due to anthropogenic climate change. The climate records detailed in this thesis improve our understanding of controls on Mexican hydroclimate and can serve as benchmarks for climate models.
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Spatio-temporal characteristics of the Agulhas leakage: a model inter-comparison study
… of water from the Indian Ocean to the South Atlantic Ocean, is highly relevant due to its potential contribution to the Atlantic Meridional Overturning Circulation (AMOC) and the global circulation of heat, salt and freshwater, hence to the global climate. As observations of the leakage are …
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Investigating Mexican paleoclimate with precisely dated speleothems
… climate mean states, and is subject to drying as Atlantic Meridional Overturning Circulation weakens due to anthropogenic climate change. The climate records detailed in this thesis improve our understanding of controls on Mexican hydroclimate and can serve as benchmarks for climate models.
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Tidally Forced Marine Ice Stream Instabilities and Their Consequences
… ocean and atmosphere and the resumption of the Atlantic Meridional Overturning Circulation (AMOC). The fingerprinting of the contributions from all major ice sheets for MWP1A and MWP1B is presented, and I propose the St. Lawrence River as the route by which MWP1B entered the ocean. This allows …
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Sverdrup Balance and Three Dimensional Variability of the Meridional Overturning Circulation
… an understanding of the spatial structure of Atlantic Meridional Overturning Circulation changes and the dynamical framework within which those changes occur. Sverdrup balance is studied using the 16 year ECCO-GODAE state estimation. It is shown to hold well in the interior subtropics when …
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The impact of assimilating along-track SLA data on simulated Eddy characteristics in the Agulhas system
… nutrients from the Indian Ocean into the South Atlantic Ocean. In so doing, they are key drivers of the Atlantic Meridional Overturning Circulation (AMOC). As such, it is important that they are adequately simulated by numerical models in order to advance the accuracy of climate prediction. In …
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The response of ocean salinity patterns to climate change: implications for circulation
… at the surface and propagate along ocean circulation pathways. Here, we use coupled model results from the CMIP5 experiment to identify coherent responses in the atmospheric water cycle and in ocean salinity patterns. Some aspects of the response are consistent across models, while other …
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Characterization of the Carbonate System across the Agulhas and Agulhas Return Currents
… and salt from the Indian Ocean into the South Atlantic Ocean via the Agulhas leakage, which influences the Atlantic Meridional Overturning Circulation (AMOC). This study presents for the first time a characterization of the role the Agulhas Current system (Agulhas and Agulhas Return Currents) …
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Structure, variability, and dynamics of the West Greenland Boundary Current System
… important implications for the strength of the Atlantic Meridional Overturning Circulation. Boundary current-interior interactions regulate the exchange of properties between the slope and the basin, which in turn regulates the magnitude of interior convection and the export of ventilated waters …
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Abrupt climate change in the Atlantic Ocean during the last 20,000 years : insights from multi-element analysis of benthic and planktic foraminifera and a coupled OA-GCM
… from planktic and benthic foraminifera from Atlantic sediment cores, as well as outputfrom a coupled OA·GCM, were used to investigate the magnitude and distribution of the oceanic response to abrupt Climate events.of the past 20,000 years. The study addressed three major questions: 1) What is …
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