Mechanisms of decadal variability of the wind-driven ocean circulation
Mechanisms of decadal variability of the wind-driven ocean circulation
Eddy-resolving quasigeostrophic simulations of wind-driven circulation in a large ocean basin are presented. The results show that strong modes of low-frequency variability arise in many parameter regimes and that the strength of these modes depends upon the presence of inertial recirculations in the flow field. The inertial recirculations arise through advection of anomalous potential vorticity by the western boundary current and are barotropized by the effect of baroclinic eddies in the flow. The mechanism of low-frequency oscillations is explored with reference to previous studies, and it is found that the observed mode can be linked to the gyre mode but is strongly modified by the effect of eddies.
512-531
Hogg, A.M.
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Killworth, P.D.
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Blundell, J.R.
88114f32-6b76-46b2-b2d8-d6ef64a82b0d
Dewar, W.K.
ed3e98c6-1a77-42dc-b970-64718f4ebb97
2005
Hogg, A.M.
df48090a-bbe6-4929-a94a-62a0aa7e5e8b
Killworth, P.D.
9fc0c4a0-e1fb-4073-8997-436b59c74bf2
Blundell, J.R.
88114f32-6b76-46b2-b2d8-d6ef64a82b0d
Dewar, W.K.
ed3e98c6-1a77-42dc-b970-64718f4ebb97
Hogg, A.M., Killworth, P.D., Blundell, J.R. and Dewar, W.K.
(2005)
Mechanisms of decadal variability of the wind-driven ocean circulation.
Journal of Physical Oceanography, 35 (4), .
(doi:10.1175/JPO2687.1).
Abstract
Eddy-resolving quasigeostrophic simulations of wind-driven circulation in a large ocean basin are presented. The results show that strong modes of low-frequency variability arise in many parameter regimes and that the strength of these modes depends upon the presence of inertial recirculations in the flow field. The inertial recirculations arise through advection of anomalous potential vorticity by the western boundary current and are barotropized by the effect of baroclinic eddies in the flow. The mechanism of low-frequency oscillations is explored with reference to previous studies, and it is found that the observed mode can be linked to the gyre mode but is strongly modified by the effect of eddies.
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Published date: 2005
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Local EPrints ID: 17405
URI: http://eprints.soton.ac.uk/id/eprint/17405
ISSN: 0022-3670
PURE UUID: 103f942b-696a-49e7-b02d-72e0b5b51dce
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Date deposited: 07 Sep 2005
Last modified: 15 Mar 2024 05:59
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Author:
A.M. Hogg
Author:
P.D. Killworth
Author:
W.K. Dewar
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