A Study of Wind Stress Effects on the Vertical Eddy Viscosity Coefficient Using the Ekman Model with Data Assimilation | |
Luo, Cheng1; Gao, Guandong2,3,5,6; Xu, Minjie4; Yin, Baoshu2,3,5,6; Lv, Xianqing1 | |
刊名 | JOURNAL OF MARINE SCIENCE AND ENGINEERING |
2023-08-01 | |
卷号 | 11期号:8页码:19 |
关键词 | vertical eddy viscosity coefficient adjoint assimilation method Ekman model wind stress kinetic energy ratio |
DOI | 10.3390/jmse11081487 |
通讯作者 | Gao, Guandong(guandonggao@qdio.ac.cn) ; Xu, Minjie(minjiexu@ytu.edu.cn) |
英文摘要 | The vertical eddy viscosity coefficient (VEVC) is an important parameter used in ocean dynamics studies to describe the intensity of mixing in the vertical direction and the process of momentum transport. In this paper, an adjoint assimilation method was used to invert the VEVC, based on the Ekman model, with the measured wind field and current data. The main purpose was to study the effect of changes in the background wind field on VEVC, and thus investigate the role of wind stress in the inversion process. The results indicated that the inverse vertical eddy viscosity coefficient increased slightly at the surface layer, reaching its maximum at around 10-12 m, and then decreased monotonically with depth. The maximum VEVC value corresponds to different depths for different wind speed ranges. Additionally, wind steering could affect the VEVC inversion curve, causing it to deviate from the general trend. The kinetic energy ratio increased with depth, peaked at 18-20 m, and then rapidly decreased to nearly zero beyond 24 m. The impact of wind field strength and steering on VEVC was observed in the kinetic energy ratio curve, which confirms the speculative wind stress effect. This study revealed the characteristics and mechanisms of VEVC in coastal waters under different wind conditions, which could provide a reference for further research on physical oceanography. |
资助项目 | National Natural Science Foundation of China (NSFC)[42006004] ; Shandong Provincial Natural Science Foundation (NSFSD)[ZR2019BD016] ; Open Fund Project of the Key Laboratory of Marine Environmental Information Technology, Ministry of Natural Resources of the People's Republic of China |
WOS关键词 | OCEAN ; PARAMETERIZATION ; VELOCITY ; CURRENTS ; SHELF ; WATER |
WOS研究方向 | Engineering ; Oceanography |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:001056090700001 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/182870] |
专题 | 海洋研究所_海洋环流与波动重点实验室 |
通讯作者 | Gao, Guandong; Xu, Minjie |
作者单位 | 1.Ocean Univ China, Phys Oceanog Lab, Frontier Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China 2.Laoshan Lab, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao 266071, Peoples R China 4.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao 266071, Peoples R China 6.Univ Chinese Acad Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Luo, Cheng,Gao, Guandong,Xu, Minjie,et al. A Study of Wind Stress Effects on the Vertical Eddy Viscosity Coefficient Using the Ekman Model with Data Assimilation[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2023,11(8):19. |
APA | Luo, Cheng,Gao, Guandong,Xu, Minjie,Yin, Baoshu,&Lv, Xianqing.(2023).A Study of Wind Stress Effects on the Vertical Eddy Viscosity Coefficient Using the Ekman Model with Data Assimilation.JOURNAL OF MARINE SCIENCE AND ENGINEERING,11(8),19. |
MLA | Luo, Cheng,et al."A Study of Wind Stress Effects on the Vertical Eddy Viscosity Coefficient Using the Ekman Model with Data Assimilation".JOURNAL OF MARINE SCIENCE AND ENGINEERING 11.8(2023):19. |
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