气候变化领域集成服务门户(CCPortal): Decadal Changes of Meridional Eddy Heat Transport in the Subpolar North Atlantic Derived From Satellite and In Situ Observations

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DOI	10.1029/2020JC016081
	Decadal Changes of Meridional Eddy Heat Transport in the Subpolar North Atlantic Derived From Satellite and In Situ Observations
	Müller V.; Melnichenko O.
发表日期	2020
ISSN	21699275
卷号	125 期号:5
英文摘要	The interannual variability of the meridional eddy heat transport in the North Atlantic is investigated based on the combined use of satellite observations of sea level anomaly (SLA) and sea surface temperature (SST) over the 25 year period from 1993 to 2017. The focus is on 47°N, a latitude close to the boundary between the subpolar and the subtropical gyres. The vertical structure of the eddy heat transport is reconstructed in 10° longitude × 5° latitude boxes from a composite analysis of Argo profile data and observations of mesoscale eddies in altimetric SLA. The transport is surface intensified with almost 95% happening above the pycnocline. It can vary immensely both zonally and vertically, in some cases reversing sign below the pycnocline. The basin-wide integrated eddy heat transport accounts for around 6% of the total meridional heat transport. During the observed period, the eddy heat transport increased on average by 0.6 TW/yr, accelerating to 1.3 TW/yr after 2005. The observed trends and variations in the eddy heat transport can be related to the large-scale temperature gradients in the region and in response to the North Atlantic Oscillation. They provide a considerable contribution to the variability of the total oceanic heat transport, suggesting a potentially important forcing mechanism in the ocean component of the climate system. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	heat transport; mesoscale eddies; North Atlantic
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186880
作者单位	International Pacific Research Center, SOEST, University of Hawai'i, Honolulu, HI, United States
推荐引用方式 GB/T 7714	Müller V.,Melnichenko O.. Decadal Changes of Meridional Eddy Heat Transport in the Subpolar North Atlantic Derived From Satellite and In Situ Observations[J],2020,125(5).
APA	Müller V.,&Melnichenko O..(2020).Decadal Changes of Meridional Eddy Heat Transport in the Subpolar North Atlantic Derived From Satellite and In Situ Observations.Journal of Geophysical Research: Oceans,125(5).
MLA	Müller V.,et al."Decadal Changes of Meridional Eddy Heat Transport in the Subpolar North Atlantic Derived From Satellite and In Situ Observations".Journal of Geophysical Research: Oceans 125.5(2020).