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Approximate Stokes Drift Profiles in Deep Water

机译:深水中的近似斯托克斯漂移曲线

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摘要

A deep-water approximation of the Stokes drift velocity profile is explored as an alternative to the monochromatic profile. The alternative profile investigated relies on the same two quantities required for the monochromatic profile, namely, the Stokes transport and the surface Stokes drift velocity. Comparisons with parametric spectra and profiles under wave spectra from the Interim ECMWF Re-Analysis (ERA-Interim) and buoy observations reveal much better agreement than the monochromatic profile even for complex sea states. That the profile gives a closer match and a more correct shear has implications for ocean circulation models since the Coriolis Stokes force depends on the magnitude and direction of the Stokes drift profile, and Langmuir turbulence parameterizations depend sensitively on the shear of the profile. The alternative profile comes at no added numerical cost compared to the monochromatic profile.
机译:探索了斯托克斯漂移速度剖面的深水近似值,以替代单色剖面。研究的替代轮廓依赖于单色轮廓所需的相同两个量,即斯托克斯传输和表面斯托克斯漂移速度。通过对临时ECMWF重新分析(ERA-临时)和浮标观测的参数光谱和波谱下的剖面进行比较,即使对于复杂的海况,也比单色剖面具有更好的一致性。由于科里奥利斯托克斯力取决于斯托克斯漂移剖面的大小和方向,而朗缪尔湍流参数化敏感地取决于剖面的剪切力,因此剖面能给出更接近的匹配和更正确的剪切力对海洋环流模型具有影响。与单色轮廓相比,替代轮廓不会增加任何数值成本。

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  • 来源
    《Journal of Physical Oceanography》 |2014年第9期|2433-2445|共13页
  • 作者单位

    European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England;

    European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England;

    European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England;

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