Journal ArticleDOI
The Role of Eddies in Determining the Structure and Response of the Wind-Driven Southern Hemisphere Overturning: Results from the Modeling Eddies in the Southern Ocean (MESO) Project
Reads0
Chats0
TLDR
The Modeling Eddies in the Southern Ocean (MESO) project uses numerical sensitivity studies to examine the role played by Southern Ocean winds and eddies in determining the density structure of the global ocean and the magnitude and structure of global overturning circulation as discussed by the authors.Abstract:
The Modeling Eddies in the Southern Ocean (MESO) project uses numerical sensitivity studies to examine the role played by Southern Ocean winds and eddies in determining the density structure of the global ocean and the magnitude and structure of the global overturning circulation. A hemispheric isopycnal-coordinate ocean model (which avoids numerical diapycnal diffusion) with realistic geometry is run with idealized forcing at a range of resolutions from coarse (2°) to eddy-permitting (1/6°). A comparison of coarse resolutions with fine resolutions indicates that explicit eddies affect both the structure of the overturning and the response of the overturning to wind stress changes. While the presence of resolved eddies does not greatly affect the prevailing qualitative picture of the ocean circulation, it alters the overturning cells involving the Southern Ocean transformation of dense deep waters and light waters of subtropical origin into intermediate waters. With resolved eddies, the surface-t...read more
Citations
More filters
Book
Science diplomacy : Antarctica, science, and the governance of international spaces
TL;DR: The Antarctic Treaty as discussed by the authors was the first nuclear arms agreement with nonarmament and peaceful use provisions that would become precedents for the outerspace and the deepsea regimes that further established these areas as international spaces.
Journal ArticleDOI
The role of eddies in the southern ocean temperature response to the southern annular mode.
TL;DR: The role of eddies in modulating the Southern Ocean response to the southern annular mode (SAM) is examined in this article, using an ocean model run at multiple resolutions from coarse-to-fine.
Journal ArticleDOI
Topographic Enhancement of Eddy Efficiency in Baroclinic Equilibration
Ryan Abernathey,Paola Cessi +1 more
TL;DR: In this article, the authors examined the equilibration of an idealized circumpolar current with and without topography and found that eddies are much more efficient when topography is present, leading to a shallower thermocline.
Journal ArticleDOI
What Sets the Strength of the Middepth Stratification and Overturning Circulation in Eddying Ocean Models
Christopher L. Wolfe,Paola Cessi +1 more
TL;DR: In this article, the authors explored the processes maintaining stratification in the oceanic middepth (between approximately 1000 and 3000 m) using an eddy-resolving general circulation model composed of a two-hemisphere, semienclosed basin with a zonal reentrant channel in the southernmost eighth of the domain.
Journal ArticleDOI
Role of Mesoscale Eddies in Cross-Frontal Transport of Heat and Biogeochemical Tracers in the Southern Ocean
Carolina O. Dufour,Stephen M. Griffies,Gregory F. de Souza,Ivy Frenger,Adele K. Morrison,Jaime B. Palter,Jorge L. Sarmiento,Eric D. Galbraith,John P. Dunne,Whit G. Anderson,Richard D. Slater +10 more
TL;DR: In this article, the role of processes transporting tracers across the Polar Front (PF) in the depth interval between the surface and major topographic sills, referred to as the “PF core, was examined.
References
More filters
Journal ArticleDOI
Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings
TL;DR: In this paper, a digital bathymetric map of the oceans with a horizontal resolution of 1 to 12 kilometers was derived by combining available depth soundings with high-resolution marine gravity information from the Geosat and ERS-1 spacecraft.
Journal ArticleDOI
Isopycnal mixing in ocean circulation models
TL;DR: In this paper, a subgrid-scale form for mesoscale eddy mixing on isopycnal surfaces is proposed for use in non-eddy-resolving ocean circulation models.
Journal ArticleDOI
The oceans : their physics, chemistry, and general biology
TL;DR: The book is intended to provide a good deal of factual information, but above all it should be an aid to the beginner and specialist alike in the coordination of the various fields of oceanography.
Journal ArticleDOI
Improved estimates of global ocean circulation, heat transport and mixing from hydrographic data
Alexandre Ganachaud,Carl Wunsch +1 more
TL;DR: These estimates provide a new reference state for future climate studies with rigorous estimates of the uncertainties, and resolve globally vertical mixing across surfaces of equal density.
Journal ArticleDOI
Oceanic Isopycnal Mixing by Coordinate Rotation
TL;DR: In this article, the effect of anisotropic turbulence as diffusive transport along and across density surfaces was modeled by transforming the mixing tensor from a diagonal second-rank tensor in the isopycnal coordinate system to a tensor containing off-diagonal elements in the geopotential coordinate system.