Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1812883116 |
Four decades of Antarctic Ice Sheet mass balance from 1979-2017 | |
Rignot, Eric1,2; Mouginot, Jeremie1,3; Scheuchl, Bernd1; van den Broeke, Michiel4; van Wessem, Melchior J.4; Morlighem, Mathieu1 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:4页码:1095-1103 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France; Netherlands |
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. |
英文关键词 | glaciology Antarctica remote sensing climate change sea-level rise |
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:000456336100007 |
WOS关键词 | CIRCUMPOLAR DEEP-WATER ; AMUNDSEN SEA EMBAYMENT ; EAST ANTARCTICA ; SHELF THICKNESS ; WEST ANTARCTICA ; OUTLET GLACIERS ; VICTORIA-LAND ; FLOW ; PENINSULA ; DYNAMICS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205183 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 2.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA; 3.Univ Grenoble Alpes, CNRS, Inst Geosci Environm, F-38058 Grenoble, France; 4.Univ Utrecht, Inst Marine & Atmospher Res Utrecht, NL-3508 TA Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | Rignot, Eric,Mouginot, Jeremie,Scheuchl, Bernd,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,2019,116(4):1095-1103. |
APA | Rignot, Eric,Mouginot, Jeremie,Scheuchl, Bernd,van den Broeke, Michiel,van Wessem, Melchior J.,&Morlighem, Mathieu.(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),1095-1103. |
MLA | Rignot, Eric,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):1095-1103. |
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