卫星海洋环境动力学国家重点实验室为增进学术交流，促进实验室对外开放，组织系列“海星系列学术讲座”，邀请国内外知名专家与青年科研人员分享前沿科学动态，讨论最新学术成果，欢迎大家踊跃参加。

报告人简介：王栋，厦门大学海洋与地球学院副教授。主要研究方向为海洋上边界层湍流混合过程及参数化，浪-流相互作用，Langmuir turbulence等，在Journal of Physical Oceanography 和Monthly Weather Review 等国际权威杂志上发表学术论文多篇。

报告摘要：The interaction of surface gravity waves with ocean currents generates an oceanic process called Langmuir turbulence (LT). LT widely distributes in the open ocean, coastal regions, and even big lakes, and is often identified by parallel bands of sea debris along the wind or wave directions with spacing from several meters to dozens of meters. LT features coherent vortex structures, which significantly enhances the upper ocean mixing and critically influences the vertical distributions of nutrition and pollutants.

In this talk, I will assess Langmuir turbulence and its impact on the upper ocean processes in the hurricane conditions, aiming to better understand the air-sea interaction with waves, and thus contribute to a better hurricane prediction. Our study uses numerical models to simulate the wind, wave, and ocean fields under hurricanes, which are developed based on the first principle of momentum and mass and tuned to the observations. Our results show that LT generally enhances sea-surface cooling through greater cold-water entrainment from the deep layer. However, such enhanced sea-surface cooling does not always occur, and the necessary conditions for the enhancement are discussed. We also illustrate the influence of wind-wave misalignment on LT’s intensity and propose a new framework for the turbulence closure scheme in the complex wind-wave conditions.