气候变化领域集成服务门户(CCPortal): Aurora Basin; the Weak Underbelly of East Antarctica

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DOI	10.1029/2019GL086821
	Aurora Basin; the Weak Underbelly of East Antarctica
	Pelle T.; Morlighem M.; McCormack F.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	The East Antarctic Ice Sheet (EAIS) has the potential to raise global sea levels by ∼52 m. Here, we model the evolution of select EAIS catchments to 2100 using three basal melt rate parameterizations and force our model with surface mass balance and ocean thermal anomalies from 10 global climate models. While the domain loses mass under low-emission scenarios, it gains ∼10-mm sea-level rise equivalent ice volume (SLRe) under high-emission scenarios. The primary region of thinning is within 50 km upstream of Totten Glacier's grounding line. Totten's glacial discharge is modulated by the migration of its grounding line, which is sensitive to brief intrusions of ocean water at temperatures higher than present. Once the grounding line is dislodged, Totten's ice velocity increases by up to 70% of present-day values, resulting in ∼6-mm SLRe loss from this sector. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Catchments; Glacial geology; Ice; Sea level; East antarctic ice sheets; East antarctica; Emission scenario; Global climate model; Global sea levels; Grounding line; Low emission scenarios; Surface mass balance; Climate models; basal melting; catchment; climate modeling; glacial hydrology; global climate; grounding line; mass balance; parameterization; sea level change; temperature anomaly; Antarctic Ice Sheet; Antarctica; East Antarctic Ice Sheet; East Antarctica; Totten Glacier
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/170415
作者单位	Department of Earth System Science, University of California Irvine, Irvine, CA, United States; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; School of Earth, Atmosphere, Australia
推荐引用方式 GB/T 7714	Pelle T.,Morlighem M.,McCormack F.S.. Aurora Basin; the Weak Underbelly of East Antarctica[J],2020,47(9).
APA	Pelle T.,Morlighem M.,&McCormack F.S..(2020).Aurora Basin; the Weak Underbelly of East Antarctica.Geophysical Research Letters,47(9).
MLA	Pelle T.,et al."Aurora Basin; the Weak Underbelly of East Antarctica".Geophysical Research Letters 47.9(2020).