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    A Combined Stokes Drift Profile under Swell and Wind Sea

    Source: Journal of Physical Oceanography:;2020:;volume( 50 ):;issue: 010::page 2819
    Author:
    Breivik, Øyvind;Christensen, Kai H.
    DOI: 10.1175/JPO-D-20-0087.1
    Publisher: American Meteorological Society
    Abstract: A combined directional Stokes drift profile for swell and wind sea is presented. The profile can be used to calculate the shear under crossing seas and as such is relevant for Langmuir turbulence and Stokes–Coriolis forcing, but also for material advection. The swell is represented as either a monochromatic wave or as a Phillips spectrum, while the wind sea is represented as a Phillips spectrum. The profile is found to compare well against the full directional Stokes drift calculated from the 2D spectrum of ERA-Interim in an open-ocean location in the North Atlantic. The error compared to a Phillips-type unidirectional Stokes drift profile is markedly lower for a combined profile with a monochromatic swell Stokes profile. However, representing the swell as a Phillips-type Stokes drift profile yields even better results. The combined profile relies on integrated wave parameters readily available from wave models and can be calculated at low cost. The global Stokes drift climate is investigated using ERA-Interim reanalysis data with the intention of identifying regions dominated by crossing Stokes drift. We find that the eastern equatorial Pacific Ocean probably experiences the greatest degree of crossing Stokes drift, and the entire subtropical band 20°–30°S/N exhibits a significant degree of crossing Stokes drift and swell dominance over the Stokes drift.
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      A Combined Stokes Drift Profile under Swell and Wind Sea

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    contributor authorBreivik, Øyvind;Christensen, Kai H.
    date accessioned2022-01-30T18:06:29Z
    date available2022-01-30T18:06:29Z
    date copyright9/17/2020 12:00:00 AM
    date issued2020
    identifier issn0022-3670
    identifier otherjpod200087.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4264503
    description abstractA combined directional Stokes drift profile for swell and wind sea is presented. The profile can be used to calculate the shear under crossing seas and as such is relevant for Langmuir turbulence and Stokes–Coriolis forcing, but also for material advection. The swell is represented as either a monochromatic wave or as a Phillips spectrum, while the wind sea is represented as a Phillips spectrum. The profile is found to compare well against the full directional Stokes drift calculated from the 2D spectrum of ERA-Interim in an open-ocean location in the North Atlantic. The error compared to a Phillips-type unidirectional Stokes drift profile is markedly lower for a combined profile with a monochromatic swell Stokes profile. However, representing the swell as a Phillips-type Stokes drift profile yields even better results. The combined profile relies on integrated wave parameters readily available from wave models and can be calculated at low cost. The global Stokes drift climate is investigated using ERA-Interim reanalysis data with the intention of identifying regions dominated by crossing Stokes drift. We find that the eastern equatorial Pacific Ocean probably experiences the greatest degree of crossing Stokes drift, and the entire subtropical band 20°–30°S/N exhibits a significant degree of crossing Stokes drift and swell dominance over the Stokes drift.
    publisherAmerican Meteorological Society
    titleA Combined Stokes Drift Profile under Swell and Wind Sea
    typeJournal Paper
    journal volume50
    journal issue10
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/JPO-D-20-0087.1
    journal fristpage2819
    journal lastpage2833
    treeJournal of Physical Oceanography:;2020:;volume( 50 ):;issue: 010
    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