Lateral heat exchange after the labrador sea deep convection in 2008

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	Lateral heat exchange after the labrador sea deep convection in 2008
	Zhang, Weiwei ; Yan, Xiao-Ha ; Yan XH(严晓海)
刊名	http://dx.doi.org/10.1175/JPO-D-13-0198.1
	2014
关键词	Heating equipment Natural convection
英文摘要	The mechanisms through which convected water restratifies in the Labrador Sea are still under debate. The Labrador Sea restratification after deep convection in the 2007/08 winter is studied with an eddy-resolving numerical model. The modeled mixed layer depth during wintertime resembles the Argo observed mixed layer very well, and the lateral heat flux during the subsequent restratification is in line with observations. The Irminger rings (IRs) are reproduced with fresher caps above the 300-m depths, and they are identified and tracked automatically. The model underestimates both the number of IRs in the convection area and the heat they carry. The underestimation is most likely caused by the errors in the direction of the west Greenland currents in the model, which causes more IRs propagating westward, and only the IRs originating south of 61.58N are able to propagate southward, yet with speed much slower than observed speed. The model still observed three eddies propagating into the convection area during the restratification phase in 2008, and their thermal contribution ranges from 1% to 4% if the estimation is made at the time when they enter the convection area. If all newly generated eddies are considered, then the ensemble-mean contributions by the IRs become 5.3%. The more detailed and direct heat flux by IRs is difficult to derive because of the strong fluctuation of the identified eddy radius. Nevertheless, the modeled lateral heat flux is largely composed of the boundary current eddies and convective eddies, thus it is possible for the model to maintain an acceptable thermal balance.
语种	英语
出版者	American Meteorological Society
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88278]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Zhang, Weiwei,Yan, Xiao-Ha,Yan XH. Lateral heat exchange after the labrador sea deep convection in 2008[J]. http://dx.doi.org/10.1175/JPO-D-13-0198.1,2014.
APA	Zhang, Weiwei,Yan, Xiao-Ha,&严晓海.(2014).Lateral heat exchange after the labrador sea deep convection in 2008.http://dx.doi.org/10.1175/JPO-D-13-0198.1.
MLA	Zhang, Weiwei,et al."Lateral heat exchange after the labrador sea deep convection in 2008".http://dx.doi.org/10.1175/JPO-D-13-0198.1 (2014).