We propose a new phenomenological model to represent the impact of wind-waves on the dissipation of turbulence kinetic energy near the sea surface. In this model, the momentum flux at a given height results from the averaged contribution of eddies attached to the sea surface whose sizes are related to the surface geometry. This yields a coupling between long wind-waves and turbulence at heights of about 10 m. This new wind-and-waves coupling is thus not exclusively confined to the short wave range and heights below 5 m, where most of the momentum transfer to the waves is known to occur. The proposed framework clarifies the impact of wind-waves on Monin–Obukhov similarity theory, and the role of long wind-waves on the observed wind-wave variability of momentum fluxes. This work reveals which state variables related to the wind-wave coupling require more accurate measurements to further improve wind-over-waves models and parametrizations.

中文翻译：

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长风波对近地表湍流和动量通量的影响

我们提出了一种新的现象学模型来表示风浪对海面附近湍流动能耗散的影响。在这个模型中，给定高度处的动量通量是由附着在海面的涡流的平均贡献产生的，涡流的大小与海面几何形状有关。这会在大约 10 m 的高度产生长风波和湍流之间的耦合。因此，这种新的风-浪耦合不仅限于短波范围和低于 5 m 的高度，已知大部分动量转移到波浪的地方发生。所提出的框架阐明了风浪对 Monin-Obukhov 相似理论的影响，以及长风浪对观测到的动量通量风浪变化的作用。