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    Large Eddy Simulation of the Ocean Mixed Layer: The Effects of Wave Breaking and Langmuir Circulation

    Source: Journal of Physical Oceanography:;2004:;Volume( 034 ):;issue: 004::page 720
    Author:
    Noh, Yign
    ,
    Min, Hong Sik
    ,
    Raasch, Siegfried
    DOI: 10.1175/1520-0485(2004)034<0720:LESOTO>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Large eddy simulation (LES) of the ocean mixed layer was performed in which both wave breaking and Langmuir circulation are realized. Wave breaking was represented by random forcing consistent with the observed near-surface turbulence, and Langmuir circulation was realized by the Craig?Leibovich vortex force. High- resolution simulations were carried out using parallel computing with or without each contribution, wave breaking and Langmuir circulation, with an aim to clarify their respective roles in the ocean mixed layer. The effects of wave breaking were found to be mainly limited to the near-surface zone of the upper few meters. Langmuir circulations below it are not significantly modified, although they become somewhat weakened and less coherent. Under the influence of wave breaking, however, the turbulence production in the upper-ocean mixed layer becomes dominated by the turbulent kinetic energy flux, contrary to the case of the atmospheric boundary layer where it is dominated by shear production. The comparison of the results from the LES and the ocean mixed layer model also reveals the significances of wave breaking and Langmuir circulation in the vertical mixing process of the ocean mixed layer.
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      Large Eddy Simulation of the Ocean Mixed Layer: The Effects of Wave Breaking and Langmuir Circulation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4167322
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    contributor authorNoh, Yign
    contributor authorMin, Hong Sik
    contributor authorRaasch, Siegfried
    date accessioned2017-06-09T14:56:17Z
    date available2017-06-09T14:56:17Z
    date copyright2004/04/01
    date issued2004
    identifier issn0022-3670
    identifier otherams-30028.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4167322
    description abstractLarge eddy simulation (LES) of the ocean mixed layer was performed in which both wave breaking and Langmuir circulation are realized. Wave breaking was represented by random forcing consistent with the observed near-surface turbulence, and Langmuir circulation was realized by the Craig?Leibovich vortex force. High- resolution simulations were carried out using parallel computing with or without each contribution, wave breaking and Langmuir circulation, with an aim to clarify their respective roles in the ocean mixed layer. The effects of wave breaking were found to be mainly limited to the near-surface zone of the upper few meters. Langmuir circulations below it are not significantly modified, although they become somewhat weakened and less coherent. Under the influence of wave breaking, however, the turbulence production in the upper-ocean mixed layer becomes dominated by the turbulent kinetic energy flux, contrary to the case of the atmospheric boundary layer where it is dominated by shear production. The comparison of the results from the LES and the ocean mixed layer model also reveals the significances of wave breaking and Langmuir circulation in the vertical mixing process of the ocean mixed layer.
    publisherAmerican Meteorological Society
    titleLarge Eddy Simulation of the Ocean Mixed Layer: The Effects of Wave Breaking and Langmuir Circulation
    typeJournal Paper
    journal volume34
    journal issue4
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(2004)034<0720:LESOTO>2.0.CO;2
    journal fristpage720
    journal lastpage735
    treeJournal of Physical Oceanography:;2004:;Volume( 034 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian