Preliminary Results of Assessing the Mixing of Wave Transport Flux Residualin the Upper Ocean with ROMS

• Published in: Journal of Ocean University of China Vol. 15; no. 2; pp. 193 - 200
• Main Authors: Shi, Yongfang, Wu, Kejian, Yang, Yongzeng
• Format: Journal Article
• Language: English
• Published: Heidelberg Science Press 01.04.2016; Springer Nature B.V; Department of Oceanography, Ocean University of China, Qingdao 266100, P.R.China%Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, P.R.China
• Subjects: Earth and Environmental Science; Earth Sciences; Marine; Meteorology; Ocean temperature; Ocean waves; Ocean-atmosphere interaction; Oceanography; Statistical analysis; Summer; Upper ocean; 上层海洋; 光盘; 混合作用; 混合层深度; 评估; 误差平方和; 输送通量; 运行控制; Bvl; ocean temperature; mixed layer depth; ROMS model
• ISSN: 1672-5182; 1993-5021; 1672-5174
• DOI: 10.1007/s11802-016-2706-5

The effects of the mixing of wave transport flux residual （Bvl） on the upper ocean is studied through carrying out the control run （CR） and a series of sensitive runs （SR） with ROMS model. In this study, the Important role of Bvl is revealed by com- paring the ocean temperature, statistical analysis of errors and evaluating the mixed layer depth. It is shown that the overestimated SST is improved effectively when the wave-induced mixing is incorporated to the vertical mixing scheme. As can be seen from the vertical structure of temperature 28℃ isotherm changes from 20min CR to 35m in SR3, which is more close to the observation. Statistic analysis shows that the root-mean-square errors of the temperature in 10m are reduced and the correlation between model results and observation data are increased after considering the effect of Bvl. The numerical results of the ocean temperature show improvement in summer and in tropical zones in winter, especially in the strong current regions in summer. In August the mixed layer depth （MLD） which is defined as the depth that the temperature has changed 0.5℃ from the reference depth of 10m is further ana- lyzed. The simulation results have a close relationship with undetermined coefficient of Bvl, sensitivity studies show that a coeffi- cient about 0.1 is reasonable value in the model