气候变化领域集成服务门户(CCPortal): Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean

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DOI	10.1175/JCLI-D-19-0323.1
	Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean
	Bryden H.L.; Johns W.E.; King B.A.; McCarthy G.; McDonagh E.L.; Moat B.I.; Smeed D.A.
发表日期	2020
ISSN	0894-8755
起始页码	1677
结束页码	1689
卷号	33 期号:5
英文摘要	Northward ocean heat transport at 268N in the Atlantic Ocean has been measured since 2004. The ocean heat transport is large—approximately 1.25 PW, and on interannual time scales it exhibits surprisingly large temporal variability. There has been a long-term reduction in ocean heat transport of 0.17 PW from 1.32 PW before 2009 to 1.15 PW after 2009 (2009–16) on an annual average basis associated with a 2.5-Sv (1 Sv [ 106 m3 s21) drop in the Atlantic meridional overturning circulation (AMOC). The reduction in the AMOC has cooled and freshened the upper ocean north of 268N over an area following the offshore edge of the Gulf Stream/North Atlantic Current from the Bahamas to Iceland. Cooling peaks south of Iceland where surface temperatures are as much as 28C cooler in 2016 than they were in 2008. Heat uptake by the atmosphere appears to have been affected particularly along the path of the North Atlantic Current. For the reduction in ocean heat transport, changes in ocean heat content account for about one-quarter of the long-term reduction in ocean heat transport while reduced heat uptake by the atmosphere appears to account for the remainder of the change in ocean heat transport. © 2020 American Meteorological Society.
英文关键词	Ocean currents; Offshore oil well production; Atlantic meridional overturning circulations; Interannual time scale; North Atlantic Currents; North Atlantic Ocean; Ocean heat content; Ocean heat transport; Surface temperatures; Temporal variability; Heat transfer; air-sea interaction; cooling; gyre; heat transfer; meridional circulation; overturn; sea surface temperature; temporal variation; Atlantic Ocean; Atlantic Ocean (North); Gulf Stream; North Atlantic Current
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171434
作者单位	School of Ocean and Earth Science, University of Southampton, Southampton, United Kingdom; Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States; National Oceanography Centre, Southampton, Southampton, United Kingdom; Irish Climate Analysis and Research Units, Department of Geography, Maynooth University, Maynooth, Ireland; Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Bryden H.L.,Johns W.E.,King B.A.,et al. Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean[J],2020,33(5).
APA	Bryden H.L..,Johns W.E..,King B.A..,McCarthy G..,McDonagh E.L..,...&Smeed D.A..(2020).Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean.Journal of Climate,33(5).
MLA	Bryden H.L.,et al."Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean".Journal of Climate 33.5(2020).