气候变化领域集成服务门户(CCPortal): Submarine melting of glaciers in Greenland amplified by atmospheric warming

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DOI	10.1038/s41561-022-01035-9
	Submarine melting of glaciers in Greenland amplified by atmospheric warming
	Slater, D. A.; Straneo, F.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	794
结束页码	+
卷号	15 期号:10 页码:18
英文摘要	Atmospheric variability can amplify ocean-driven submarine melting of marine-terminating glaciers in Greenland, according to an analysis of observations and models from 1979 to 2018. Rapid ice loss from the Greenland ice sheet since 1992 is due in equal parts to increased surface melting and accelerated ice flow. The latter is conventionally attributed to ocean warming, which has enhanced submarine melting of the fronts of Greenland's marine-terminating glaciers. Yet, through the release of ice sheet surface meltwater into the ocean, which excites near-glacier ocean circulation and in turn the transfer of heat from ocean to ice, a warming atmosphere can increase submarine melting even in the absence of ocean warming. The relative importance of atmospheric and oceanic warming in driving increased submarine melting has, however, not been quantified. Here, we reconstruct the rate of submarine melting at Greenland's marine-terminating glaciers from 1979 to 2018 and estimate the resulting dynamic mass loss. We show that in south Greenland, variability in submarine melting was indeed governed by the ocean, but, in contrast, the atmosphere dominated in the northwest. At the ice sheet scale, the atmosphere plays a first-order role in controlling submarine melting and the subsequent dynamic mass loss. Our results challenge the attribution of dynamic mass loss to ocean warming alone and show that a warming atmosphere has amplified the impact of the ocean on the Greenland ice sheet.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000865214900001
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272634
作者单位	University of Edinburgh; University of California System; University of California San Diego; Scripps Institution of Oceanography; University of St Andrews
推荐引用方式 GB/T 7714	Slater, D. A.,Straneo, F.. Submarine melting of glaciers in Greenland amplified by atmospheric warming[J],2022,15(10):18.
APA	Slater, D. A.,&Straneo, F..(2022).Submarine melting of glaciers in Greenland amplified by atmospheric warming.NATURE GEOSCIENCE,15(10),18.
MLA	Slater, D. A.,et al."Submarine melting of glaciers in Greenland amplified by atmospheric warming".NATURE GEOSCIENCE 15.10(2022):18.