气候变化领域集成服务门户(CCPortal): Signature of Ocean Warming at the Mixed Layer Base

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DOI	10.1029/2019GL086269
	Signature of Ocean Warming at the Mixed Layer Base
	Clément L.; McDonagh E.L.; Marzocchi A.; Nurser A.J.G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	The warming climate influences the ocean by changing its wind-driven dynamics and by inputting extra heat. This study analyzes the warming where temperature anomalies penetrate the ocean interior, that is, by focusing on the winter mixed layer base. This allows to distinguish regions where ocean circulation contributes to warm anomalies from locations where density-compensated temperature anomalies locally enter the ocean along isopycnals. Multidecadal (1980–2018) local temperature trends from a hydrographic data set are examined at the winter mixed layer base and partitioned into components relating to isopycnal movement (heave) and change along isopycnals (spice). Subtropical gyres and western boundary currents show warming larger than the global average that mostly projects onto heave. This is the result of the strengthening of the circulation in the Southern Hemisphere subtropical gyres and is related to both wind-driven changes and Southern Ocean warming. Subtropical regions of surface salinity maxima are influenced by warm anomalies along isopycnals. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Tropics; Density-compensated temperatures; Local temperature; Southern Hemisphere; Subtropical regions; Surface salinities; Temperature anomaly; Western boundary currents; Winter mixed layers; Oceanography; data set; gyre; hydrography; isopycnal layer; mixed layer; salinity; Southern Hemisphere; subtropical region; temperature anomaly; warming; wind-driven circulation; Southern Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170859
作者单位	National Oceanography Centre, Southampton, United Kingdom; NORCE, Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Clément L.,McDonagh E.L.,Marzocchi A.,et al. Signature of Ocean Warming at the Mixed Layer Base[J],2020,47(1).
APA	Clément L.,McDonagh E.L.,Marzocchi A.,&Nurser A.J.G..(2020).Signature of Ocean Warming at the Mixed Layer Base.Geophysical Research Letters,47(1).
MLA	Clément L.,et al."Signature of Ocean Warming at the Mixed Layer Base".Geophysical Research Letters 47.1(2020).