The dependence of the ocean's MOC on mesoscale eddy diffusivities: A model study

被引：36

作者：

Marshall, John ^{[1
]}

Scott, Jeffery R. ^{[1
]}

Romanou, Anastasia ^{[2
]}

Kelley, Maxwell ^{[2
]}

Leboissetier, Anthony ^{[2
]}

机构：

[1] MIT, Dept Earth Atmospher & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] NASA, Goddard Inst Space Studies, 2880 Broadway, New York, NY 10025 USA

来源：

OCEAN MODELLING | 2017年 / 111卷

关键词：

Meridional overturning circulation; Mesoscale eddy diffusivity; Global ocean; MERIDIONAL OVERTURNING CIRCULATION; GLOBAL OCEAN; SOUTHERN-OCEAN; STRATIFICATION; DYNAMICS;

D O I：

10.1016/j.ocemod.2017.01.001

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The dependence of the depth and strength of the ocean's global meridional overturning cells (MOC) on the specification of mesoscale eddy diffusivity (K) is explored in two ocean models. The GISS and MIT ocean models are driven by the same prescribed forcing fields, configured in similar ways, spun up to equilibrium for a range of K's and the resulting MOCs mapped and documented. Scaling laws implicit in modern theories of the MOC are used to rationalize the results. In all calculations the K used in the computation of eddy-induced circulation and that used in the representation of eddy stirring along neutral surfaces, is set to the same value but is changed across experiments. We are able to connect changes in the strength and depth of the Atlantic MOC, the southern ocean upwelling MOC, and the deep cell emanating from Antarctica, to changes in K. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

共 43 条

[1] Global surface eddy diffusivities derived from satellite altimetry [J].

Abernathey, R. P. ;

Marshall, J. .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2013, 118 (02) :901-916

[2] WATER MASS MODEL OF THE WORLD OCEAN [J].

BRYAN, K ;

LEWIS, LJ .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS AND ATMOSPHERES, 1979, 84 (NC5) :2503-2517

[3] Observations, inferences, and mechanisms of the Atlantic Meridional Overturning Circulation: A review [J].

Buckley, Martha W. ;

Marshall, John .

REVIEWS OF GEOPHYSICS, 2016, 54 (01) :5-63

[4] Effects of vertical variations of thickness diffusivity in an ocean general circulation model [J].

Danabasoglu, Gokhan ;

Marshall, John .

OCEAN MODELLING, 2007, 18 (02) :122-141

[5] North Atlantic simulations in Coordinated Ocean-ice Reference Experiments phase II (CORE-II). Part I: Mean states [J].

Danabasoglu, Gokhan ;

Yeager, Steve G. ;

Bailey, David ;

Behrens, Erik ;

Bentsen, Mats ;

Bi, Daohua ;

Biastoch, Arne ;

Boening, Claus ;

Bozec, Alexandra ;

Canuto, Vittorio M. ;

Cassou, Christophe ;

Chassignet, Eric ;

Coward, Andrew C. ;

Danilov, Sergey ;

Diansky, Nikolay ;

Drange, Helge ;

Farneti, Riccardo ;

Fernandez, Elodie ;

Fogli, Pier Giuseppe ;

Forget, Gael ;

Fujii, Yosuke ;

Griffies, Stephen M. ;

Gusev, Anatoly ;

Heimbach, Patrick ;

Howard, Armando ;

Jung, Thomas ;

Kelley, Maxwell ;

Large, William G. ;

Leboissetier, Anthony ;

Lu, Jianhua ;

Madec, Gurvan ;

Marsland, Simon J. ;

Masina, Simona ;

Navarra, Antonio ;

Nurser, A. J. George ;

Pirani, Anna ;

Salas y Melia, David ;

Samuels, Bonita L. ;

Scheinert, Markus ;

Sidorenko, Dmitry ;

Treguier, Anne-Marie ;

Tsujino, Hiroyuki ;

Uotila, Petteri ;

Valcke, Sophie ;

Voldoire, Aurore ;

Wangi, Qiang .

OCEAN MODELLING, 2014, 73 :76-107

[6] An assessment of Antarctic Circumpolar Current and Southern Ocean meridional overturning circulation during 1958-2007 in a suite of interannual CORE-II simulations [J].

Farneti, Riccardo ;

Downes, Stephanie M. ;

Griffies, Stephen M. ;

Marsland, Simon J. ;

Behrens, Erik ;

Bentsen, Mats ;

Bi, Daohua ;

Biastoch, Arne ;

Boening, Claus ;

Bozec, Alexandra ;

Canuto, Vittorio M. ;

Chassignet, Eric ;

Danabasoglu, Gokhan ;

Danilov, Sergey ;

Diansky, Nikolay ;

Drange, Helge ;

Fogli, Pier Giuseppe ;

Gusev, Anatoly ;

Hallberg, Robert W. ;

Howard, Armando ;

Ilicak, Mehmet ;

Jung, Thomas ;

Kelley, Maxwell ;

Large, William G. ;

Leboissetier, Anthony ;

Long, Matthew ;

Lu, Jianhua ;

Masina, Simona ;

Mishra, Akhilesh ;

Navarra, Antonio ;

Nurser, A. J. George ;

Patara, Lavinia ;

Samuels, Bonita L. ;

Sidorenko, Dmitry ;

Tsujino, Hiroyuki ;

Uotila, Petteri ;

Wang, Qiang ;

Yeager, Steve G. .

OCEAN MODELLING, 2015, 93 :84-120

[7] Estimating eddy stresses by fitting dynamics to observations using a residual-mean ocean circulation model and its adjoint [J].

Ferreira, D ;

Marshall, J ;

Heimbach, P .

JOURNAL OF PHYSICAL OCEANOGRAPHY, 2005, 35 (10) :1891-1910

[8] ECCO version 4: an integrated framework for non-linear inverse modeling and global ocean state estimation [J].

Forget, G. ;

Campin, J. -M. ;

Heimbach, P. ;

Hill, C. N. ;

Ponte, R. M. ;

Wunsch, C. .

GEOSCIENTIFIC MODEL DEVELOPMENT, 2015, 8 (10) :3071-3104

[9]

GENT PR, 1990, J PHYS OCEANOGR, V20, P150, DOI 10.1175/1520-0485(1990)020<0150:IMIOCM>2.0.CO

[10]

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