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首页> 外文期刊>Journal of Physical Oceanography >Super Residual Circulation: A New Perspective on Ocean Vertical Heat Transport
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Super Residual Circulation: A New Perspective on Ocean Vertical Heat Transport

机译：超级剩余循环：海洋垂直传热的新视角

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摘要

Ocean circulation and mixing regulate Earth's climate by moving heat vertically within the ocean. We present a new formalism to diagnose the role of ocean circulation and diabatic processes in setting vertical heat transport in ocean models. In this formalism we use temperature tendencies, rather than explicit vertical velocities, to diagnose circulation. Using quasi-steady-state simulations from the Australian Community Climate and Earth-System Simulator Ocean Model (ACCESS-OM2), we diagnose a diathermal overturning circulation in temperature-depth space. Furthermore, projection of tendencies due to diabatic processes onto this coordinate permits us to represent these as apparent overturning circulations. Our framework permits us to extend the concept of "Super Residual Transport,'' which combines mean and eddy advection terms with subgridscale isopycnal mixing due to mesoscale eddies but excludes small-scale threedimensional turbulent mixing effect, to construct a new overturning circulation-the "Super Residual Circulation'' (SRC). We find that in the coarse-resolution version of ACCESS-OM2 (nominally 1 degrees horizontal resolution) the SRC is dominated by an similar to 11-Sv (1 Sv [10(6) m(3) s(-1)) circulation that transports heat upward. The SRC's upward heat transport is;2 times as large in a finer-horizontal-resolution (0.1 degrees) version of ACCESS, suggesting that a differing balance of super-residual and parameterized small-scale processes may emerge as eddies are resolved. Our analysis adds new insight into superresidual processes, because the SRC elucidates the pathways in temperature and depth space along which water mass transformation occurs.
机译：海洋循环和混合通过在海洋内垂直移动热量来调节地球的气候。我们提出了一种新的形式主义来诊断海洋循环和糖尿病过程在海洋模型中垂直热输送方面的作用。在这种形式主义中，我们使用温度倾向，而不是明确的垂直速度，以诊断循环。使用澳大利亚社区气候和地球系统模拟器海洋模型（Access-OM2）的准稳态模拟，我们诊断了温度深度空间中的透热倾覆循环。此外，在该坐标上引起的倾向的投影允许我们将这些视为明显的翻转循环。我们的框架允许我们扩展“超级剩余运输”的概念，该概念将卑鄙和涡流的平流和eDDy平流融合与阶段偏移造成的子耕地等级混合相结合，但排除了小规模的三维湍流混合效果，以构建一个新的翻转循环 - “超级残留循环''（SRC）。我们发现，在Access-OM2的粗分辨率版本中，SRC通过类似于11-SV（1 SV [10（6）M（3）S（-1））循环主导SRC向上运输热量。 SRC的向上热传输是较好的水平分辨率（0.1度）的访问中的2倍，表明超级残差和参数化小规模过程的不同余额可能会出现，因为漩涡被解决。我们的分析增加了新的洞察力过程，因为SRC阐明了温度和深度空间中的途径，发生了水质转换。

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  • 来源
    《Journal of Physical Oceanography》 |2021年第8期|2443-2462|共20页
  • 作者

    Savita Abhishek; Zika Jan D.; Domingues Catia M.; Marsland Simon J.; Evans Gwyn Dafydd; Dias Fabio Boeira; Holmes Ryan M.; McC. Hogg Andrew;

  • 作者单位

    Univ Tasmania Inst Marine & Antarctic Studies Hobart Tas Australia|CSIRO Oceans & Atmosphere Aspendale Vic Australia|Australian Res Council Ctr Excellence Climate Extremes Sydney NSW Australia;

    Univ New South Wales Sch Math & Stat Sydney NSW Australia;

    Univ Tasmania Inst Marine & Antarctic Studies Hobart Tas Australia|Australian Res Council Ctr Excellence Climate Extremes Sydney NSW Australia|Natl Oceanog Ctr Southampton Hants England;

    Univ Tasmania Inst Marine & Antarctic Studies Hobart Tas Australia|CSIRO Oceans & Atmosphere Aspendale Vic Australia|Australian Res Council Ctr Excellence Climate Extremes Sydney NSW Australia;

    Natl Oceanog Ctr Southampton Hants England;

    Univ Tasmania Inst Marine & Antarctic Studies Hobart Tas Australia|CSIRO Oceans & Atmosphere Aspendale Vic Australia|Australian Res Council Ctr Excellence Climate Extremes Sydney NSW Australia|Univ Helsinki Inst Atmospher & Earth Syst Res Helsinki Finland;

    Australian Res Council Ctr Excellence Climate Extremes Sydney NSW Australia|Univ New South Wales Climate Change Res Ctr Sydney NSW Australia;

    Australian Res Council Ctr Excellence Climate Extremes Sydney NSW Australia|Australian Natl Univ Res Sch Earth Sci Canberra ACT Australia;

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  • 正文语种 eng
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  • 关键词

    Advection; Lagrangian circulation/transport; Mesoscale processes; Mixing; Ocean circulation; Vertical motion;

    机译：平流;拉格朗日循环/运输;Mescle流程;混合;海洋循环;垂直运动;

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