Wave Effect on the Ocean Circulations Through Mass Transport and Wave-Induced Pumping

作     者：BI Fan WU Kejian 

作者机构：Physical Oceanography LaboratoryOcean University of China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2014年第13卷第2期

页      面：175-182页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：funded by the National Science Foundation of China (40976005 and 40930844) 

主　　题：Stokes transport Sverdrup transport wave pumping velocity western boundary currents 

摘      要：The wave Coriolis-Stokes-Force-modified ocean momentum equations are reviewed in this paper and the wave Stokes transport is pointed out to be part of the ocean circulations. Using the European Centre for Medium-Range Weather Forecasts 40-year reanalysis data(ERA-40 data) and the Simple Ocean Data Assimilation(SODA) version 2.2.4 data, the magnitude of this transport is compared with that of wind-driven Sverdrup transport and a 5-to-10-precent contribution by the wave Stokes transport is found. Both transports are stronger in boreal winter than in summers. The wave effect can be either contribution or cancellation in different seasons. Examination with Kuroshio transport verifies similar seasonal variations. The clarification of the efficient wave boundary condition helps to understand the role of waves in mass transport. It acts as surface wind stress and can be functional down to the bottom of the ageostrophic layer. The pumping velocities resulting from wave-induced stress are zonally distributed and are significant in relatively high latitudes. Further work will focus on the model performance of the wave-stress-changed-boundary and the role of swells in the eastern part of the oceans.