Sound speed, submesoscale, and spice: The role of rapidly evolving instabilities in setting upper ocean properties

2021 ◽  
Vol 150 (4) ◽  
pp. A24-A24
Author(s):  
Jennifer MacKinnon
Keyword(s):  
Sound Speed ◽  
Upper Ocean ◽  
Ocean Properties

The Role Of Surface Waves On The Upper Ocean: Application In Indonesian Seas

Jurnal Segara ◽  
2012 ◽  
Vol 8 (1) ◽  
pp. 1 ◽  
Author(s):  
Rita Tisiana Dwi Kuswardani ◽  
Fangli Qiao
Keyword(s):  
Surface Waves ◽  
Upper Ocean ◽  
Indonesian Seas

scholarly journals Employing Satellite-Derived Sea Ice Concentration to Constrain Upper-Ocean Temperature in a Global Ocean GCM

2008 ◽  
Vol 21 (17) ◽  
pp. 4498-4513 ◽  
Author(s):  
Achim Stössel
Keyword(s):  
Sea Ice ◽  
Deep Ocean ◽  
Global Ocean ◽  
Upper Ocean ◽  
Ocean Temperature ◽  
Freshwater Input ◽  
Sea Ice Concentration ◽  
Ice Concentration ◽  
Ocean Properties

Abstract The quality of Southern Ocean sea ice simulations in a global ocean general circulation model (GCM) depends decisively on the simulated upper-ocean temperature. This is confirmed by assimilating satellite-derived sea ice concentration to constrain the upper-layer temperature of a sea ice–ocean GCM. The resolution of the model’s sea ice component is about 22 km and thus comparable to the pixel resolution of the satellite data. The ocean component is coarse resolution to afford long-term integrations for investigations of the deep-ocean equilibrium response. Besides improving the sea ice simulation considerably, the simulations with constrained upper-ocean temperature yield much more realistic global deep-ocean properties, in particular when combined with glacial freshwater input. Both outcomes are relatively insensitive to the passive-microwave algorithm used to retrieve the ice concentration being assimilated. The sensitivity of the long-term global deep-ocean properties and circulation to the possible freshwater input from ice shelves and to the parameterization of vertical mixing in the Southern Ocean is reevaluated under the new constraint.

scholarly journals The dependence of upper ocean gyres on wind and buoyancy forcing

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Tongya Liu ◽  
Hsien-Wang Ou ◽  
Xiaohui Liu ◽  
Yu-Kun Qian ◽  
Dake Chen
Keyword(s):  
Wind Forcing ◽  
Upper Ocean ◽  
Subpolar Gyre ◽  
Meridional Temperature Gradient ◽  
Buoyancy Forcing ◽  
Vertical Diffusivity ◽  
Ocean Gyres ◽  
Eddy Heat Transport ◽  
Diapycnal Diffusivity

AbstractA series of numerical simulations with different forcing conditions are carried out, to investigate the roles played by buoyancy and wind forcing on the upper ocean gyres, and to contrast the laminar and eddying regimes. Model experiments show that the buoyancy-driven eastward geostrophic flow tends to suppress the formation of the wind-driven subpolar gyre, but the northward eddy heat transport can homogenize the subpolar water and reduce the meridional temperature gradient by about two-third, thus counteracting the buoyancy effect and saving the subpolar gyre. For the subtropical gyre, its transport is enhanced by eddy mixing, and the role of buoyancy forcing is very sensitive to the choice of diapycnal diffusivity. Our results suggest that eddy effects must be considered in the dynamics of the subpolar gyre, and vertical diffusivity should be selected carefully in simulating the basin-wide circulations.

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