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Geostrophic adjustment on the equatorial beta-plane revisited

机译:Realatorial Beta-Plane对Reastrophic调整重新审视

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摘要

The process of geostrophic adjustment of localized large-scale pressure anomalies in the standard adiabatic shallow-water model on the equatorial beta-plane is revisited, and it is shown that the standard scenario of generation of westward-moving Rossby and eastward-moving Kelvin waves, which underlies the classical Gill theory of tropical circulation due to a localized heating, is not unique. Depending on the strength and aspect ratio of the initial perturbation, the response to the initial perturbation in the western sector can be dominated by inertia-gravity waves. The adjustment in the diabatic moist-convective shallow water model can be totally different and produces, depending on parameters, either Gill-like response or eastward-moving coherent dipolar structures of the type of equatorial modons, which do not appear in the "dry" adjustment, or vortices traveling, respectively, northwest in the Northern and southwest in the Southern hemispheres. Published under license by AIP Publishing.
机译:重新讨论了标准绝热浅水模型中局部大规模压力异常的热脑调整的过程,并显示了西方罗斯比和东方的开尔文波的标准场景,这是由于局部加热导致的热带循环的经典鳃理论是不是独特的。取决于初始扰动的强度和纵横比,对西部地区的初始扰动的反应可以由惯性重力波导地位。蛋白湿润对流浅水模型的调节可以完全不同,并根据参数产生,涡轮样响应或向东移动的相干双极结构,其类型的逆转莫源的类型不出现在“干燥”中分别调整或涡流,分别在南半球北部和西南部的西北部。通过AIP发布在许可证下发布。

著录项

  • 来源
    《Physics of fluids》 |2019年第8期|共5页
  • 作者

    Rostami M.; Zeitlin V.;

  • 作者单位

    Sorbonne Univ LMD 24 Rue Lhomond F-75005 Paris France;

    Sorbonne Univ LMD 24 Rue Lhomond F-75005 Paris France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 流体力学;
  • 关键词

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