Monthly and episodic dynamics of summer circulation in Lake Michigan

doi:10.1029/2019JC015932

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	Monthly and episodic dynamics of summer circulation in Lake Michigan
	Mao, MH1 ; Xia, M 2
发表期刊	Journal of Geophysical Research: Oceans
ISSN	2169-9275
	2020-06-18
卷号	125 期号:6 页码:e2019JC015932
关键词	summer circulation numerical modeling wind wave baroclinic dynamics
研究领域	Oceanography
DOI	10.1029/2019JC015932
通讯作者	Xia, Meng(mxia@umes.edu)
英文摘要	A comprehensive understanding of lake circulation is fundamental to inform better management of ecological issues and fishery resources in the Great Lakes. In this study, a high-resolution, wave-current coupled, three-dimensional modeling system was applied to investigate the monthly and episodic dynamics of summer circulation in Lake Michigan. Model sensitivities to three wind sources and two grid resolutions against observed current velocities, water temperatures, and significant wave heights in the summer of 2014 were examined. Model performance was validated with additional satellite imageries and current measurements in the summer of 2015. Results indicated that the high-resolution model driven by the observation-based winds reproduced lake dynamics most reasonably. In July 2014, a pair of monthly averaged anticyclonic (i.e., clockwise) gyres in the surface layer were simulated in southern Lake Michigan. Analysis indicates that they originate from the wind-driven, upwelling-favorable, jet-like Ekman currents along the west shore, which are connected by the density-driven basin-scale circulation. Although river inputs, strait exchanges, waves, grid resolutions, and bathymetric variations influence the monthly surface circulation, their effects are less important than the wind and density-driven currents. Additional simulations support the predominant impacts of wind and density-driven currents on lake surface circulation during a strong wind event. Further investigations suggest that lake circulation varies from surface to bottom layers, and this knowledge is significant to the related ecological issues and fishery resources management. The numerical model configured to Lake Michigan is beneficial to understanding dynamics in the Great Lakes system and other large water bodies.
文章类型	Article
资助机构	National Science Foundation ; NOAA GLERL
收录类别	SCI
语种	英语
关键词[WOS]	WIND-DRIVEN CIRCULATION ; INVASIVE QUAGGA MUSSELS ; THERMAL STRUCTURE ; GREAT-LAKES ; NUMERICAL-SIMULATION ; BOUNDARY-LAYER ; PART I ; MODEL ; COASTAL ; PATTERNS
研究领域[WOS]	Oceanography
WOS记录号	WOS:000549832900031
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/25265
专题	中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者	Xia, M
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat 2.Univ Maryland Eastern Shore, Dept Nat Sci, Princess Anne, MD 21853 USA
推荐引用方式 GB/T 7714	Mao, MH,Xia, M. Monthly and episodic dynamics of summer circulation in Lake Michigan[J]. Journal of Geophysical Research: Oceans,2020,125(6):e2019JC015932.
APA	Mao, MH,&Xia, M.(2020).Monthly and episodic dynamics of summer circulation in Lake Michigan.Journal of Geophysical Research: Oceans,125(6),e2019JC015932.
MLA	Mao, MH,et al."Monthly and episodic dynamics of summer circulation in Lake Michigan".Journal of Geophysical Research: Oceans 125.6(2020):e2019JC015932.

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