On the Wind Power Input to the Ocean General Circulation

The wind power input to the ocean general circulation is usually calculated from the time-averaged wind products. Here, this wind power input is reexamined using available observations, focusing on the role of the synoptically varying wind. Power input to the ocean general circulation is found to in...

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Main Authors: Zhai, X, Johnson, H, Marshall, D, Wunsch, C
Format: Journal article
Language:English
Published: 2012
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author Zhai, X
Johnson, H
Marshall, D
Wunsch, C
author_facet Zhai, X
Johnson, H
Marshall, D
Wunsch, C
author_sort Zhai, X
collection OXFORD
description The wind power input to the ocean general circulation is usually calculated from the time-averaged wind products. Here, this wind power input is reexamined using available observations, focusing on the role of the synoptically varying wind. Power input to the ocean general circulation is found to increase by over 70% when 6-hourly winds are used instead of monthly winds. Much of the increase occurs in the storm-track regions of the Southern Ocean, Gulf Stream, and Kuroshio Extension. This result holds irrespective of whether the ocean surface velocity is accounted for in the wind stress calculation. Depending on the fate of the highfrequency wind power input, the power input to the ocean general circulation relevant to deep-ocean mixing may be less than previously thought. This study emphasizes the difficulty of choosing appropriate forcing for ocean-only models. © 2012 American Meteorological Society.
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spelling oxford-uuid:1b5dc61f-78c6-467c-a893-7de9990b70232022-03-26T10:59:59ZOn the Wind Power Input to the Ocean General CirculationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1b5dc61f-78c6-467c-a893-7de9990b7023EnglishSymplectic Elements at Oxford2012Zhai, XJohnson, HMarshall, DWunsch, CThe wind power input to the ocean general circulation is usually calculated from the time-averaged wind products. Here, this wind power input is reexamined using available observations, focusing on the role of the synoptically varying wind. Power input to the ocean general circulation is found to increase by over 70% when 6-hourly winds are used instead of monthly winds. Much of the increase occurs in the storm-track regions of the Southern Ocean, Gulf Stream, and Kuroshio Extension. This result holds irrespective of whether the ocean surface velocity is accounted for in the wind stress calculation. Depending on the fate of the highfrequency wind power input, the power input to the ocean general circulation relevant to deep-ocean mixing may be less than previously thought. This study emphasizes the difficulty of choosing appropriate forcing for ocean-only models. © 2012 American Meteorological Society.
spellingShingle Zhai, X
Johnson, H
Marshall, D
Wunsch, C
On the Wind Power Input to the Ocean General Circulation
title On the Wind Power Input to the Ocean General Circulation
title_full On the Wind Power Input to the Ocean General Circulation
title_fullStr On the Wind Power Input to the Ocean General Circulation
title_full_unstemmed On the Wind Power Input to the Ocean General Circulation
title_short On the Wind Power Input to the Ocean General Circulation
title_sort on the wind power input to the ocean general circulation
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