|关键词: 海气动量通量 风应力拖曳系数 参数化方案 海浪
|Review on the study of the momentum flux through air-sea interface
Institute of Oceanology, Chinese Academy of Sciences
|The momentum flux of air sea interface, also known as wind stress, is the main driving force for ocean currents and surface waves, it is an important way for the ocean to get momentum from the atmosphere. Therefore, the reasonable and reliable parameterization of the ocean surface wind stress has very important scientific significance and practical value for the accurate prediction of the models of ocean, atmosphere, wave and climate. The parameterization of wind stress drag coefficient is the main content of parameterization of wind stress. Recent observations show that the wind stress drag coefficient increases first and then decreases with the increase of wind speed, and is also related to the wave state of the sea and the current. Based on the observation or theoretical analysis, a series of methods or formulas for calculating the drag coefficient of wind stress have been obtained. Some have considered the effect of sea waves, some not, but most of these schemes are suitable for middle and low wind speed, and the applicability of these schemes at high wind speed remains to be tested. In this paper, the current research progress in the observation and parameterization of sea air momentum flux is reviewed. In the end, it is suggested that the synchronous observation of wind speed, sea current and sea wave should be conducted to further improve the parameterization of wind stress.
|Key words: Momentum flux through air-sea interface Wind stress drag coefficient Parameterization method Ocean waves