气候变化领域集成服务门户(CCPortal): Greenland ice sheet climate disequilibrium and committed sea-level rise

CCPortal

DOI	10.1038/s41558-022-01441-2
	Greenland ice sheet climate disequilibrium and committed sea-level rise
	Box, Jason E.; Hubbard, Alun; Bahr, David B.; Colgan, William T.; Fettweis, Xavier; Mankoff, Kenneth D.; Wehrle, Adrien; Noel, Brice; van den Broeke, Michiel R.; Wouters, Bert; Bjork, Anders A.; Fausto, Robert S.
发表日期	2022
ISSN	1758-678X
EISSN	1758-6798
起始页码	808
结束页码	+
卷号	12 期号:9 页码:11
英文摘要	Ice loss from the Greenland ice sheet is one of the largest sources of contemporary sea-level rise (SLR). While process-based models place timescales on Greenland's deglaciation, their confidence is obscured by model shortcomings including imprecise atmospheric and oceanic couplings. Here, we present a complementary approach resolving ice sheet disequilibrium with climate constrained by satellite-derived bare-ice extent, tidewater sector ice flow discharge and surface mass balance data. We find that Greenland ice imbalance with the recent (2000-2019) climate commits at least 274 +/- 68 mm SLR from 59 +/- 15 x 10(3) km(2) ice retreat, equivalent to 3.3 +/- 0.9% volume loss, regardless of twenty-first-century climate pathways. This is a result of increasing mass turnover from precipitation, ice flow discharge and meltwater run-off. The high-melt year of 2012 applied in perpetuity yields an ice loss commitment of 782 +/- 135 mm SLR, serving as an ominous prognosis for Greenland's trajectory through a twenty-first century of warming. Greenland ice sheet melt is currently the largest single contributor to sea-level rise. This work combines observations and theory to show that Greenland ice sheet imbalance with recent climate (2000-2019) has already committed at least 3.3% ice volume loss, equivalent to 274 mm of global sea-level rise.
学科领域	Environmental Sciences; Environmental Studies; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000847259100003
来源期刊	NATURE CLIMATE CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/274095
作者单位	Geological Survey Of Denmark & Greenland; UiT The Arctic University of Tromso; University of Colorado System; University of Colorado Boulder; University of Liege; University of Zurich; Utrecht University; Delft University of Technology; University of Copenhagen
推荐引用方式 GB/T 7714	Box, Jason E.,Hubbard, Alun,Bahr, David B.,et al. Greenland ice sheet climate disequilibrium and committed sea-level rise[J],2022,12(9):11.
APA	Box, Jason E..,Hubbard, Alun.,Bahr, David B..,Colgan, William T..,Fettweis, Xavier.,...&Fausto, Robert S..(2022).Greenland ice sheet climate disequilibrium and committed sea-level rise.NATURE CLIMATE CHANGE,12(9),11.
MLA	Box, Jason E.,et al."Greenland ice sheet climate disequilibrium and committed sea-level rise".NATURE CLIMATE CHANGE 12.9(2022):11.