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
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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
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A multiresolution method for climate system modeling: application of spherical centroidal Voronoi tessellations
TL;DR: This work defines, developing, and exhibiting SCVTs, and pair this mesh generation technique with a previously developed finite-volume method, based on the nonlinear, shallow-water equations spanning the entire surface of the sphere.
Journal ArticleDOI
The ocean's role in polar climate change: asymmetric Arctic and Antarctic responses to greenhouse gas and ozone forcing.
John Marshall,Kyle C. Armour,Jeffery R. Scott,Yavor Kostov,Ute Hausmann,David Ferreira,Theodore G. Shepherd,Cecilia M. Bitz +7 more
TL;DR: It is argued here that interhemispheric asymmetries in the mean ocean circulation, with sinking in the northern North Atlantic and upwelling around Antarctica, strongly influence the sea-surface temperature (SST) response to anthropogenic greenhouse gas (GHG) forcing, accelerating warming in the Arctic while delaying it in the Antarctic.
Journal ArticleDOI
GO5.0: The joint NERC-Met Office NEMO global ocean model for use in coupled and forced applications
Alex Megann,D. Storkey,Yevgeny Aksenov,S.G. Alderson,Daley Calvert,Tim Graham,Patrick Hyder,John Siddorn,Bablu Sinha +8 more
TL;DR: The Global Ocean standard configuration (GO5.0) as mentioned in this paper was developed with the seamless approach to modelling in mind for ocean modelling across timescales and for a range of applications, from short-range ocean forecasting through seasonal forecasting to climate predictions as well as research use.
Journal ArticleDOI
The role of Southern Ocean processes in orbital and millennial CO2 variations – A synthesis
Hubertus Fischer,Hubertus Fischer,Hubertus Fischer,Jochen Schmitt,Jochen Schmitt,Jochen Schmitt,Dieter Lüthi,Dieter Lüthi,Thomas F. Stocker,Thomas F. Stocker,Tobias Tschumi,Tobias Tschumi,Payal Parekh,Payal Parekh,Fortunat Joos,Fortunat Joos,Peter Köhler,Christoph Völker,Rainer Gersonde,Carlo Barbante,Martine Le Floch,Dominique Raynaud,Eric W. Wolff,Eric W. Wolff +23 more
TL;DR: In this article, the effect of changes in the Southern Ocean related to changes in surface buoyancy flux, which in return is controlled by the waxing and waning of sea ice may favorably explain the high correlation of CO 2 and Antarctic temperature on orbital and millennial time scales.
Journal ArticleDOI
An assessment of Antarctic Circumpolar Current and Southern Ocean meridional overturning circulation during 1958–2007 in a suite of interannual CORE-II simulations
Riccardo Farneti,Stephanie M. Downes,Stephen M. Griffies,Simon J. Marsland,Erik Behrens,Mats Bentsen,Daohua Bi,Arne Biastoch,Claus W. Böning,Alexandra Bozec,Vittorio Canuto,Eric P. Chassignet,Gokhan Danabasoglu,Sergey Danilov,Nikolay Diansky,Helge Drange,Pier Giuseppe Fogli,Anatoly Gusev,Robert Hallberg,A. M. Howard,A. M. Howard,Mehmet Ilicak,Thomas Jung,Maxwell Kelley,William G. Large,Anthony Leboissetier,Matthew C. Long,Jianhua Lu,Simona Masina,Simona Masina,Akhilesh Mishra,Antonio Navarra,Antonio Navarra,A. J. George Nurser,Lavinia Patara,Bonita L. Samuels,Dmitry Sidorenko,Hiroyuki Tsujino,Petteri Uotila,Petteri Uotila,Qiang Wang,Steve G. Yeager +41 more
TL;DR: In the second phase of the Coordinated Ocean-ice Reference Experiments (CORE-II) as discussed by the authors, the authors present an analysis of the representation of the Antarctic Circumpolar Current (ACC) and Southern Ocean meridional overturning circulation (MOC) in a suite of seventeen global ocean-sea ice models.
References
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