Mass balance of the Greenland Ice Sheet from 1992 to 2018

doi:10.1038/s41586-019-1855-2

GSTDTAP > 地球科学

DOI	10.1038/s41586-019-1855-2
	Mass balance of the Greenland Ice Sheet from 1992 to 2018
	Scudellari, Megan
	2019-12-10
发表期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2020
卷号	579 期号:7798 页码:233-+
文章类型	Article
语种	英语
国家	England; USA; Netherlands; France; Belgium; Denmark; Italy; Scotland; Germany; Canada; Norway; Chile; Spain; Austria; South Korea
英文关键词	The Greenland Ice Sheet has been a major contributor to global sea-level rise in recent decades(1,2), and it is expected to continue to be so(3). Although increases in glacier flow(4-6) and surface melting(7-9) have been driven by oceanic(10-12) and atmospheric(13,14) warming, the magnitude and trajectory of the ice sheet' s mass imbalance remain uncertain. Here we compare and combine 26 individual satellite measurements of changes in the ice sheet' s volume, flow and gravitational potential to produce a reconciled estimate of its mass balance. The ice sheet was close to a state of balance in the 1990s, but annual losses have risen since then, peaking at 345 +/- 66 billion tonnes per year in 2011. In all, Greenland lost 3,902 +/- 342 billion tonnes of ice between 1992 and 2018, causing the mean sea level to rise by 10.8 +/- 0.9 millimetres. Using three regional climate models, we show that the reduced surface mass balance has driven 1,964 +/- 565 billion tonnes (50.3 per cent) of the ice loss owing to increased meltwater runoff. The remaining 1,938 +/- 541 billion tonnes (49.7 per cent) of ice loss was due to increased glacier dynamical imbalance, which rose from 46 +/- 37 billion tonnes per year in the 1990s to 87 +/- 25 billion tonnes per year since then. The total rate of ice loss slowed to 222 +/- 30 billion tonnes per year between 2013 and 2017, on average, as atmospheric circulation favoured cooler conditions(15) and ocean temperatures fell at the terminus of Jakobshavn Isbr AE(16). Cumulative ice losses from Greenland as a whole have been close to the rates predicted by the Intergovernmental Panel on Climate Change for their high-end climate warming scenario(17), which forecast an additional 70 to 130 millimetres of global sea-level rise by 2100 compared with their central estimate.
领域	地球科学 ; 气候变化 ; 资源环境
收录类别	SCI-E
WOS记录号	WOS:000519378900023
WOS关键词	GLACIAL ISOSTATIC-ADJUSTMENT ; RELATIVE SEA-LEVEL ; PETERMANN GLACIER ; ELEVATION CHANGE ; SURFACE ; GRACE ; CLIMATE ; MODEL ; ACCELERATION ; ANTARCTICA
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
URL	查看原文
引用统计	被引频次：400[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/231906
专题	地球科学资源环境科学气候变化
推荐引用方式 GB/T 7714	Scudellari, Megan. Mass balance of the Greenland Ice Sheet from 1992 to 2018[J]. NATURE,2019,579(7798):233-+.
APA	Scudellari, Megan.(2019).Mass balance of the Greenland Ice Sheet from 1992 to 2018.NATURE,579(7798),233-+.
MLA	Scudellari, Megan."Mass balance of the Greenland Ice Sheet from 1992 to 2018".NATURE 579.7798(2019):233-+.