Roles of breaking waves and Langmuir circulation in the surface boundary layer of a coastal ocean

doi:10.1002/jgrc.20387

IOCAS-IR > 海洋环流与波动重点实验室

	Roles of breaking waves and Langmuir circulation in the surface boundary layer of a coastal ocean
	Li, Shuang 1; Li, Ming 2; Gerbi, Gregory P.3,4; Song, Jin-Bao 5; Li, M
	2013-10-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	118 期号:10 页码:5173-5187
文章类型	Article
摘要	Breaking waves and Langmuir circulation are two important turbulent processes in the wind-driven upper ocean. To investigate their roles in generating turbulence in the surface boundary layer of a coastal ocean, a large eddy simulation model is used to simulate the turbulence measurements collected at the Martha's Vineyard Coastal Observatory's Air-Sea Interaction Tower, during the Coupled Boundary Layers and Air-Sea Transfer (CBLAST) experiment in 2003. The model provides reasonable predictions for the vertical profiles of vertical velocity variance, turbulent kinetic energy (TKE), energy dissipation rates, and heat flux. It shows breaking waves dominating turbulence generation near the ocean surface and turbulent large eddies characteristic of Langmuir circulation deeper in the water column. Diagnostic analysis of TKE budget in the model shows a dominant balance between turbulent transport and dissipation near the surface and a dominant balance between shear production and dissipation at deeper depths. Although the Stokes production is a significant term in the TKE budget balance near the surface, it is smaller than shear production. The turbulent transport is large in the near-surface zone and is still significant in the region affected by Langmuir circulation. These results are in agreement with a conclusion inferred from a recent analysis of the near-surface turbulence measurements at the CBLAST site.; Breaking waves and Langmuir circulation are two important turbulent processes in the wind-driven upper ocean. To investigate their roles in generating turbulence in the surface boundary layer of a coastal ocean, a large eddy simulation model is used to simulate the turbulence measurements collected at the Martha's Vineyard Coastal Observatory's Air-Sea Interaction Tower, during the Coupled Boundary Layers and Air-Sea Transfer (CBLAST) experiment in 2003. The model provides reasonable predictions for the vertical profiles of vertical velocity variance, turbulent kinetic energy (TKE), energy dissipation rates, and heat flux. It shows breaking waves dominating turbulence generation near the ocean surface and turbulent large eddies characteristic of Langmuir circulation deeper in the water column. Diagnostic analysis of TKE budget in the model shows a dominant balance between turbulent transport and dissipation near the surface and a dominant balance between shear production and dissipation at deeper depths. Although the Stokes production is a significant term in the TKE budget balance near the surface, it is smaller than shear production. The turbulent transport is large in the near-surface zone and is still significant in the region affected by Langmuir circulation. These results are in agreement with a conclusion inferred from a recent analysis of the near-surface turbulence measurements at the CBLAST site.
关键词	Wave Breaking Langmuir Circulation Ocean Mixed Layer Large Eddy Simulation
学科领域	Oceanography
DOI	10.1002/jgrc.20387
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000327380100027
WOS关键词	LARGE-EDDY SIMULATION ; VERTICAL KINETIC-ENERGY ; SEA TRANSFER EXPERIMENT ; MIXED-LAYER ; STOKES DRIFT ; SHALLOW-WATER ; TURBULENCE ; DISSIPATION ; MODELS ; DRIVEN
WOS标题词	Science & Technology ; Physical Sciences
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16431
专题	海洋环流与波动重点实验室
通讯作者	Li, M
作者单位	1.Zhejiang Univ, Ocean Coll, Hangzhou 310003, Zhejiang, Peoples R China 2.Univ Maryland, Horn Point Lab, Ctr Environm Sci, Cambridge, MD 21613 USA 3.Skidmore Coll, Dept Phys, Saratoga Springs, NY 12866 USA 4.Skidmore Coll, Dept Geosci, Saratoga Springs, NY 12866 USA 5.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuang,Li, Ming,Gerbi, Gregory P.,et al. Roles of breaking waves and Langmuir circulation in the surface boundary layer of a coastal ocean[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2013,118(10):5173-5187.
APA	Li, Shuang,Li, Ming,Gerbi, Gregory P.,Song, Jin-Bao,&Li, M.(2013).Roles of breaking waves and Langmuir circulation in the surface boundary layer of a coastal ocean.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,118(10),5173-5187.
MLA	Li, Shuang,et al."Roles of breaking waves and Langmuir circulation in the surface boundary layer of a coastal ocean".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 118.10(2013):5173-5187.

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