A Study of Wind Stress Effects on the Vertical Eddy Viscosity Coefficient Using the Ekman Model with Data Assimilation

doi:10.3390/jmse11081487

IOCAS-IR > 海洋环流与波动重点实验室

	A Study of Wind Stress Effects on the Vertical Eddy Viscosity Coefficient Using the Ekman Model with Data Assimilation
	Luo, Cheng 1; Gao, Guandong 2,3,4,5; Xu, Minjie 6; Yin, Baoshu 2,3,4,5; Lv, Xianqing 1
	2023-08-01
发表期刊	JOURNAL OF MARINE SCIENCE AND ENGINEERING
卷号	11 期号:8 页码:19
通讯作者	Gao, Guandong(guandonggao@qdio.ac.cn) ; Xu, Minjie(minjiexu@ytu.edu.cn)
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.
关键词	vertical eddy viscosity coefficient adjoint assimilation method Ekman model wind stress kinetic energy ratio
DOI	10.3390/jmse11081487
收录类别	SCI
语种	英语
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研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Ocean ; Oceanography
WOS记录号	WOS:001056090700001
出版者	MDPI
WOS关键词	OCEAN ; PARAMETERIZATION ; VELOCITY ; CURRENTS ; SHELF ; WATER
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182871
专题	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.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao 266071, Peoples R China 3.Laoshan Lab, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao 266071, Peoples R China 6.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China
通讯作者单位	中国科学院海洋研究所
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.