globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1812883116
论文题名:
Four decades of Antarctic ice sheet mass balance from 1979–2017
作者: Rignot E.; Mouginot J.; Scheuchl B.; Van Den Broeke M.; Van Wessem M.J.; Morlighem M.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2019
卷: 116, 期:4
起始页码: 1095
结束页码: 1103
语种: 英语
英文关键词: Antarctica ; Climate change ; Glaciology ; Remote sensing ; Sea-level rise
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
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.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163573
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


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

Recommended Citation:
Rignot E.,Mouginot J.,Scheuchl B.,et al. Four decades of Antarctic ice sheet mass balance from 1979–2017[J]. Proceedings of the National Academy of Sciences of the United States of America,2019-01-01,116(4)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Rignot E.]'s Articles
[Mouginot J.]'s Articles
[Scheuchl B.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Rignot E.]'s Articles
[Mouginot J.]'s Articles
[Scheuchl B.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Rignot E.]‘s Articles
[Mouginot J.]‘s Articles
[Scheuchl B.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.