地球温带大气中大尺度涡旋-平均流相互作用

IF 25.4 1区工程技术 Q1 MECHANICS

Annual Review of Fluid Mechanics Pub Date : 2023-10-03 DOI:10.1146/annurev-fluid-121021-035602

Noboru Nakamura

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引用次数: 0

摘要

地球温带大气的大尺度环流是由涡旋、东(西风)纬向风及其相互作用主导的。涡旋不仅带来天气变化，而且有助于维持气候的平均状态。近年来，由于有限振幅涡旋和相关的无涡旋参考状态的新的动力学约束，我们对温带大气中大尺度涡旋和平均气流如何相互作用的理解有了显著的进展。本文综述了有限振幅罗斯比波活动的理论基础和相关概念。然后将理论应用于大气数据，以阐明角动量如何通过罗斯比波的产生、传输和耗散而重新分布，并揭示异常大波事件(如大气阻塞)如何由区域涡旋-平均流相互作用产生。预计流体力学年度评论的最终在线出版日期，第56卷是2024年1月。修订后的估计数请参阅http://www.annualreviews.org/page/journal/pubdates。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Large-Scale Eddy-Mean Flow Interaction in the Earth's Extratropical Atmosphere

Large-scale circulation of the atmosphere in the Earth's extratropics is dominated by eddies, eastward (westerly) zonal winds, and their interaction. Eddies not only bring about weather variabilities but also help maintain the average state of climate. In recent years, our understanding of how large-scale eddies and mean flows interact in the extratropical atmosphere has advanced significantly due to new dynamical constraints on finite-amplitude eddies and the related eddy-free reference state. This article reviews the theoretical foundations for finite-amplitude Rossby wave activity and related concepts. Theory is then applied to atmospheric data to elucidate how angular momentum is redistributed by the generation, transmission, and dissipation of Rossby waves and to reveal how an anomalously large wave event such as atmospheric blocking may arise from regional eddy-mean flow interaction.Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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来源期刊

Annual Review of Fluid Mechanics 物理-力学

CiteScore

54.00

自引率

0.40%

发文量

期刊介绍： The Annual Review of Fluid Mechanics is a longstanding publication dating back to 1969 that explores noteworthy advancements in the field of fluid mechanics. Its comprehensive coverage includes various topics such as the historical and foundational aspects of fluid mechanics, non-newtonian fluids and rheology, both incompressible and compressible fluids, plasma flow, flow stability, multi-phase flows, heat and species transport, fluid flow control, combustion, turbulence, shock waves, and explosions. Recently, an important development has occurred for this journal. It has transitioned from a gated access model to an open access platform through Annual Reviews' innovative Subscribe to Open program. Consequently, all articles published in the current volume are now freely accessible to the public under a Creative Commons Attribution (CC BY) license. This new approach not only ensures broader dissemination of research in fluid mechanics but also fosters a more inclusive and collaborative scientific community.