大气密度分层对风力产生水波的影响

IF 3.1 3区地球科学 Q2 METEOROLOGY & ATMOSPHERIC SCIENCES

Ocean Modelling Pub Date : 2024-08-20 DOI:10.1016/j.ocemod.2024.102425

Montri Maleewong, Roger Grimshaw

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引用次数: 0

摘要

针对大气密度分层的情况，重新研究了风产生水波的临界层不稳定机制。密度分层仅限于大气中层和上层，然后研究了两种情况。在情况 (A) 中，大气上层不会产生内部重力波，密度分层的影响非常小。在情况（B）中，高层大气中形成垂直传播的内部重力波，并传播到无限远处，造成能量损失，从而抑制了低层大气中的临界水平不稳定性。这两种情况都对对数风切变剖面进行了定量研究。

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Effect of atmospheric density stratification on the generation of water waves by wind

The critical level instability mechanism for the generation of water waves by wind is re-examined for the situation when the atmosphere is density stratified. The density stratification is confined to the middle and upper atmosphere and then two cases are investigated. In case (A) no internal gravity waves are generated in the upper atmosphere and the effect of the density stratification is very small. In case (B) vertically propagating internal gravity waves form in the upper atmosphere and travel to infinity causing an energy loss, thus inhibiting the critical level instability in the lower atmosphere. Both cases are examined quantitatively for a logarithmic wind shear profile.

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来源期刊

Ocean Modelling 地学-海洋学

CiteScore

5.50

自引率

9.40%

发文量

审稿时长

19.6 weeks

期刊介绍： The main objective of Ocean Modelling is to provide rapid communication between those interested in ocean modelling, whether through direct observation, or through analytical, numerical or laboratory models, and including interactions between physical and biogeochemical or biological phenomena. Because of the intimate links between ocean and atmosphere, involvement of scientists interested in influences of either medium on the other is welcome. The journal has a wide scope and includes ocean-atmosphere interaction in various forms as well as pure ocean results. In addition to primary peer-reviewed papers, the journal provides review papers, preliminary communications, and discussions.