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The dependence of the oceans MOC on mesoscale eddy diffusivities: A model studyThe 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.
Document ID
20170001444
Document Type
Reprint (Version printed in journal)
Authors
Marshall, John (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Scott, Jeffery R. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Romanou, Anastasia (Columbia Univ. New York, NY, United States)
Kelley, Maxwell (TRINNOVIM, LLC New York, NY, United States)
Leboissetier, Anthony (TRINNOVIM, LLC New York, NY, United States)
Date Acquired
February 8, 2017
Publication Date
January 16, 2017
Publication Information
Publication: Ocean Modelling
Volume: 111
ISSN: 1463-5003
Subject Category
Fluid Mechanics and Thermodynamics
Oceanography
Report/Patent Number
GSFC-E-DAA-TN38981
Funding Number(s)
CONTRACT_GRANT: NNX14AB99A
CONTRACT_GRANT: NNG12HP07C
CONTRACT_GRANT: NNH10ZDA001N-MAP
Distribution Limits
Public
Copyright
Other
Keywords
Global ocean
Meridional overturning circulation
Mesoscale eddy diffusivity