气候变化领域集成服务门户(CCPortal): Four decades of Antarctic ice sheet mass balance from 1979

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DOI	10.1073/pnas.1812883116
	Four decades of Antarctic ice sheet mass balance from 1979–2017
	Rignot E.; Mouginot J.; Scheuchl B.; Van Den Broeke M.; Van Wessem M.J.; Morlighem M.
发表日期	2019
ISSN	0027-8424
起始页码	1095
结束页码	1103
卷号	116 期号:4
英文摘要	We use updated drainage inventory, ice thickness, and ice velocity data to calculate the grounding line ice discharge of 176 basins draining the Antarctic Ice Sheet from 1979 to 2017. We compare the results with a surface mass balance model to deduce the ice sheet mass balance. The total mass loss increased from 40 ± 9 Gt/y in 1979–1990 to 50 ± 14 Gt/y in 1989–2000, 166 ± 18 Gt/y in 1999–2009, and 252 ± 26 Gt/y in 2009–2017. In 2009–2017, the mass loss was dominated by the Amundsen/Bellingshausen Sea sectors, in West Antarctica (159 ± 8 Gt/y), Wilkes Land, in East Antarctica (51 ± 13 Gt/y), and West and Northeast Peninsula (42 ± 5 Gt/y). The contribution to sea-level rise from Antarctica averaged 3.6 ± 0.5 mm per decade with a cumulative 14.0 ± 2.0 mm since 1979, including 6.9 ± 0.6 mm from West Antarctica, 4.4 ± 0.9 mm from East Antarctica, and 2.5 ± 0.4 mm from the Peninsula (i.e., East Antarctica is a major participant in the mass loss). During the entire period, the mass loss concentrated in areas closest to warm, salty, subsurface, circumpolar deep water (CDW), that is, consistent with enhanced polar westerlies pushing CDW toward Antarctica to melt its floating ice shelves, destabilize the glaciers, and raise sea level. © 2019 National Academy of Sciences. All Rights Reserved.
英文关键词	Antarctica; Climate change; Glaciology; Remote sensing; Sea-level rise
语种	英语
scopus关键词	Antarctica; flow rate; glacial mass balance; glacier; ice sheet; island (geological); priority journal; Review; satellite imagery; sea level rise; sea surface temperature; thickness; velocity
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158870
作者单位	Rignot, E., Department of Earth System Science, University of California, Irvine, CA 92697, United States, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States; Mouginot, J., Department of Earth System Science, University of California, Irvine, CA 92697, United States, Institut des Geosciences de l’Environment, Universite Grenoble Alpes, CNRS, Grenoble, 38058, France; Scheuchl, B., Department of Earth System Science, University of California, Irvine, CA 92697, United States; Van Den Broeke, M., Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, 3508 TA, Netherlands; Van Wessem, M.J., Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, 3508 TA, Netherlands; Morlighem, M., Department of Earth System Science, University of California, Irvine, CA 92697, United States
推荐引用方式 GB/T 7714	Rignot E.,Mouginot J.,Scheuchl B.,等. Four decades of Antarctic ice sheet mass balance from 1979–2017[J],2019,116(4).
APA	Rignot E.,Mouginot J.,Scheuchl B.,Van Den Broeke M.,Van Wessem M.J.,&Morlighem M..(2019).Four decades of Antarctic ice sheet mass balance from 1979–2017.Proceedings of the National Academy of Sciences of the United States of America,116(4).
MLA	Rignot E.,et al."Four decades of Antarctic ice sheet mass balance from 1979–2017".Proceedings of the National Academy of Sciences of the United States of America 116.4(2019).