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Showing 1 to 20 of 70 for “"Meridional overturning circulation"”.

  1. Decadal variability of the Atlantic Meridional Overturning Circulation

    Buckley, Martha WeaverMassachusetts Institute of Technology2011

    … 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 transport, numerous studies have suggested that AMOC variability plays a role in climate variability on a …

    mit Repository record

  2. Diapycnal mixing transience and the meridional overturning circulation

    Boos, William R. (William Ronald), 1975-Massachusetts Institute of Technology2002

    … dynamics and associated heat transport of the meridional overturning circulation, yet uncertainty exists regarding the distribution and physical mechanisms of this mixing. This study uses a highly-idealized, single-hemisphere model of buoyancy-forced flow to examine the examine the effects of …

    mit Repository record

  3. Sverdrup Balance and Three Dimensional Variability of the Meridional Overturning Circulation

    Thomas, MatthewUniversity of East Anglia2012

    … 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 integrating …

    east-anglia Repository record

  4. The Southern Ocean meridional overturning circulation as diagnosed from an eddy permitting state estimate

    Mazloff, Matthew R.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2008

    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 to the state estimate solution is carried out by systematically adjusting the control variables (atmospheric state and …

    woods-hole Repository record

  5. The southern ocean meridional overturning circulation as diagnosed from an eddy permitting state estimate

    Mazloff, Matthew RMassachusetts Institute of Technology2008

    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 to the state estimate solution is carried out by systematically adjusting the control variables (atmospheric state and …

    mit Repository record

  6. Decadal variability of the subtropical gyre and deep meridional overturning circulation of the Indian Ocean

    Palmer, M.D.University of Southampton2005

    … in this Thesis concerns the large-scale circulation of the Indian Ocean and follows three lines of investigation: (i) decadal variability of the subtropical gyre circulation; (ii) decadal variability of the deep meridional overturning circulation (MOC); and (iii) the influence of …

    soton Repository record

  7. On the pathways of the return flow of the meridional overturning circulation in the tropical Atlantic

    Jochum, MarkusMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2002

    … to investigate the upper layer pathways of the Meridional Overturning Circulation (MOC) in the tropical Atlantic. The main focus of this thesis is on those parts of the tropical circulation that are thought to be important for the MOC return flow, but whose dynamics have not been understood yet. …

    woods-hole Repository record

  8. Constraining variability of the Atlantic Meridional Overturning Circulation at 25N from historical observations, 1980 to 2005

    Longworth, H.R.University of Southampton2007

    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 …

    soton Repository record

  9. On the pathways of the return flow of the meridional overturning circulation in the tropical Atlantic

    Jochum, Markus, 1969-Massachusetts Institute of Technology2002

    … to investigate the upper layer pathways of the Meridional Overturning Circulation (MOC) in the tropical Atlantic. The main focus of this thesis is on those parts of the tropical circulation that are thought to be important for the MOC return flow, but whose dynamics have not been understood yet. …

    mit Repository record

  10. Long-term variability and change of the Atlantic Meridional Overturning Circulation in a hierarchy of climate models

    MEHLING, OLIVER MARKUSPolitecnico di Torino2025

    L'abstract è presente nell'allegato / the abstract is in the attachment

    poli-torino Repository record

  11. Meltwater injections and their impact on Atlantic meridional overturning circulation and climate during the time period of Heinrich Event 1 and the last deglaciation

    Stanford, Jennifer D.University of Southampton2008

    The temporal relationship between meltwater pulse 1a (mwp-1a) and the climate<br/>history of the last deglaciation remains a subject of debate. By combining the<br/>GRIP ?18O ice core record on the new Greenland Ice Core Chronology 2005<br/>(GICC05) timescale with the U/Th-dated Barbados coral …

    soton Repository record

  12. Residual overturning circulation and its connection to Southern Ocean dynamics

    Youngs, Madeleine Kendall.Massachusetts Institute of Technology2020

    Over the last 20 years, our understanding of the meridional overturning circulation has improved, but primarily in a two-dimensional, zonally-averaged framework. In this thesis, I have pushed beyond this simplification and shown that the additional complexity of meanders, storm tracks, and other …

    mit Repository record

  13. The roles of mixing, geothermal heating, and surface buoyancy forcing in ocean meridional overturning dynamics

    Scott, Jeffery RMassachusetts Institute of Technology2000

    The dynamics of the oceanic large-scale meridional overturning circulation are investigated through a series of numerical experiments using an idealized single-hemisphere general circulation model. In addition to the system's scaling behavior, the consequences of diapycnal mixing location, the …

    mit Repository record

  14. Hydrographic structure of overflow water passing through the Denmark Strait

    Mastropole, Dana M.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2015

    … 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 Ridge, and to the North Atlantic Ocean. The goal of this study is to …

    woods-hole Repository record

  15. Mixing by ocean eddies

    Abernathey, Ryan (Ryan Patrick)Massachusetts Institute of Technology2012

    … estimate of the Southern Ocean, revealing a meridional cross-section of effective diffusivity shaped by the interplay between eddy propagation and mean flow. Effective diffusivity diagnostics are then applied to quantify surface mixing rates globally, using a, kinematic model with velocities …

    mit Repository record

  16. Hydrographic structure of overflow water passing through the Denmark Strait

    Mastropole, Dana MMassachusetts Institute of Technology2015

    … 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 Ridge, and to the North Atlantic Ocean. The goal of this study is to …

    mit Repository record

  17. Low frequency variabilty of the Agulhas Current region in a numerical model

    du Plessis, Kirsten AnnetteDepartment of Oceanography2013

    … global importance due to its role in the Global Meridional Overturning Circulation (GMOC) and regionally it can influence rainfall patterns and severe weather events. The long-term variability of the Agulhas region was analysed in relation to temperature, sea surface height (SSH) and velocity …

    cape-town Repository record

  18. The Gulf Stream: along-stream evolution of volume transport and water properties observed by underwater gliders

    Heiderich, JoleenMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2021

    … components of the upper limb of the Atlantic Meridional Overturning Circulation. Extensive observations collected using Spray autonomous underwater gliders from 2004 through 2020 fill a 1500-km-long gap in longer-term sustained subsurface measurements of the Gulf Stream. The gliders provide …

    woods-hole Repository record

  19. Vertical Structure of Propagating Features

    Mujahid, AazaniUniversity of Southampton2010

    … 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 AMOC at 26.5 ?N to be<br/>up to 3 Sv, and with a 25% reduction in strength over the last 50 years. There was …

    soton Repository record

  20. Evaluation of an eddy resolving HYCOM simulation in the South Atlantic Ocean

    Giddy, Isabelle SindiswaDepartment of Oceanography2014

    … and feeding the upper branch of the Atlantic Meridional Overturning Circulation. To date, this region remains under sampled over long time periods. Models form useful platforms for the wholistic study of such regions where long term datasets are not available. However, it is important to first …

    cape-town Repository record

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