Despite many investigations/studies on the surface wave‐induced stress, the global feature of the wave‐induced stress has not been obtained previously as that requires a simultaneous observation of wave spectra and wind on a global scale. The China France Oceanography Satellite (CFOSAT) provided an opportunity for the first time to evaluate the global wave‐induced stress and its contribution to the total wind stress. In this study, the global spatial distributions of wave‐induced stress and its correlated index for August to November in 2019 are presented using the simultaneous ocean surface winds and wave spectra from the CFOSAT. The main results show that the wave‐induced stress is fundamentally dependent on the wind and wave fields on a global scale and shows significant temporal and spatial variations. Further analyses indicate that there is an upward momentum flux under strong swells and low wind speeds (below ∼5 m/s), and an anticorrelation between the dimensionless wave‐induced stress and the proportion of swell energy to the total. Finally, the variations of the surface wave induced wind stress are clear asymmetric between northern and southern hemispheres in late summer but symmetric in late fall, which are closely associated with the seasonal changes in large‐scale atmospheric circulation.

中文翻译：

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关于全球海洋上的首次观测波致应力

尽管对表面波引起的应力进行了许多研究/研究，但先前尚未获得波引起的应力的全局特征，因为这需要在全球范围内同时观察波谱和风。中法海洋卫星（CFOSAT）首次提供了一个机会来评估全球波浪引起的应力及其对总风应力的贡献。在这项研究中，利用CFOSAT的同步海面风和波谱，介绍了2019年8月至11月的波致应力的全球空间分布及其相关指数。主要结果表明，波浪引起的应力从根本上取决于全球范围内的风场和波浪场，并显示出显着的时空变化。进一步的分析表明，在强隆起和低风速（低于5 m / s）下存在一个向上的动量通量，并且无因次波诱发应力与溶胀能量占总能量的比例之间存在反相关关系。最后，表面波引起的风应力的变化在夏末的南北半球之间明显不对称，而在秋末则是对称的，这与大规模大气环流的季节变化密切相关。