Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NCLIMATE3180 |
Meltwater produced by wind-albedo interaction stored in an East Antarctic ice shelf | |
Lenaerts, J. T. M.1,2; Lhermitte, S.2,3; Drews, R.4,8; Ligtenberg, S. R. M.1; Berger, S.4; Helm, V.5; Smeets, C. J. P. P.1; van den Broeke, M. R.1; van de Berg, W. J.1; van Meijgaard, E.6; Eijkelboom, M.1; Eisen, O.5,7; Pattyn, F.4 | |
2017 | |
发表期刊 | NATURE CLIMATE CHANGE |
ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2017 |
卷号 | 7期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Belgium; Germany |
英文摘要 | Surface melt and subsequent firn air depletion can ultimately lead to disintegration of Antarctic ice shelves(1,2) causing grounded glaciers to accelerate(3) and sea level to rise. In the Antarctic Peninsula, foehn winds enhance melting near the grounding line(4), which in the recent past has led to the disintegration of the most northerly ice shelves(5,6). Here, we provide observational and model evidence that this process also occurs over an East Antarctic ice shelf, where meltwater-induced firn air depletion is found in the grounding zone. Unlike the Antarctic Peninsula, where foehn events originate from episodic interaction of the circumpolar westerlies with the topography, in coastal East Antarctica high temperatures are caused by persistent katabatic winds originating from the ice sheet's interior. Katabatic winds warm and mix the air as it flows downward and cause widespread snow erosion, explaining >3 K higher near-surface temperatures in summer and surface melt doubling in the grounding zone compared with its surroundings. Additionally, these winds expose blue ice and firn with lower surface albedo, further enhancing melt. The in situ observation of supraglacial flow and englacial storage of meltwater suggests that ice-shelf grounding zones in East Antarctica, like their Antarctic Peninsula counterparts, are vulnerable to hydrofracturing(7). |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000396346700016 |
WOS关键词 | SURFACE MASS-BALANCE ; SUPRAGLACIAL LAKES ; SHEET ; CLIMATE ; MODEL ; FIRN ; MELT ; SENSITIVITY ; EVOLUTION ; DRAINAGE |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/34048 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Utrecht, Inst Marine & Atmospher Res Utrecht, NL-3584 CC Utrecht, Netherlands; 2.Katholieke Univ Leuven, Dept Earth & Environm Sci, B-3000 Leuven, Belgium; 3.Delft Univ Technol, Dept Geosci & Remote Sensing, NL-2600 GA Delft, Netherlands; 4.Univ Libre Bruxelles, Lab Glaciol, B-1050 Brussels, Belgium; 5.Alfred Wegener Inst, D-27568 Bremerhaven, Germany; 6.Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands; 7.Univ Bremen, Dept Geosci, D-28359 Bremen, Germany; 8.Bavarian Acad Sci & Humanities, D-80539 Munich, Germany |
推荐引用方式 GB/T 7714 | Lenaerts, J. T. M.,Lhermitte, S.,Drews, R.,et al. Meltwater produced by wind-albedo interaction stored in an East Antarctic ice shelf[J]. NATURE CLIMATE CHANGE,2017,7(1). |
APA | Lenaerts, J. T. M..,Lhermitte, S..,Drews, R..,Ligtenberg, S. R. M..,Berger, S..,...&Pattyn, F..(2017).Meltwater produced by wind-albedo interaction stored in an East Antarctic ice shelf.NATURE CLIMATE CHANGE,7(1). |
MLA | Lenaerts, J. T. M.,et al."Meltwater produced by wind-albedo interaction stored in an East Antarctic ice shelf".NATURE CLIMATE CHANGE 7.1(2017). |
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