The generation of kinetic energy in tropical cyclones revisited
The generation of kinetic energy in tropical cyclones revisited
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重新审视热带气旋中动能的产生
DOI：
10.1002/qj.3332
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发表时间：
2018
影响因子：
8.9
通讯作者：
G. Kilroy
中科院分区：
文献类型：
--
作者：
Roger K. Smith;M. Montgomery;G. Kilroy
以往对热带气旋全球动能收支的许多诊断都突出了动能生成中压力功项的全球积分。然而，阿德里安·吉尔在他博学的教科书《大气-海洋动力学》中推导出了动能方程的一种形式，其中没有这样明确的源项。在这篇文章中，我们根据吉尔的分析重新审视了以前给出的动能产生的解释，并比较了各种解释，这些解释是不唯一的。此外，虽然全球能量提供了一个约束的流动演变，在动能方程的背景下，他们隐藏的重要方面的能量产生和消耗，一个发现，突出了全球动能预算的局限性，揭示了热带气旋的基本动力学。
Many previous diagnoses of the global kinetic energy budget for a tropical cyclone have given prominence to the global integral of a pressure–work term in the generation of kinetic energy. However, in his erudite textbook Atmosphere–Ocean Dynamics, Adrian Gill derives a form of the kinetic energy equation in which there is no such explicit source term. In this article we revisit the interpretations of the generation of kinetic energy given previously in light of Gill's analysis and compare the various interpretations, which are non‐unique. Further, although global energetics provide a constraint on the flow evolution, in the context of the kinetic energy equation they conceal important aspects of energy generation and consumption, a finding which highlights the limitations of a global kinetic energy budget in revealing the underlying dynamics of tropical cyclones.