globalchange  > 气候变化与战略
DOI: 10.1038/s41561-021-00697-1
论文题名:
Multi-decadal trends in Antarctic sea-ice extent driven by ENSO–SAM over the last 2,000 years
作者: Crosta X.; Etourneau J.; Orme L.C.; Dalaiden Q.; Campagne P.; Swingedouw D.; Goosse H.; Massé G.; Miettinen A.; McKay R.M.; Dunbar R.B.; Escutia C.; Ikehara M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2021
卷: 14, 期:3
起始页码: 156
结束页码: 160
语种: 英语
英文关键词: advection ; climate modeling ; decadal variation ; El Nino-Southern Oscillation ; ice cover ; regional climate ; sea ice ; sea surface temperature ; trend analysis ; vertical distribution ; wind field ; Southern Ocean
英文摘要: Antarctic sea ice has paradoxically become more extensive over the past four decades despite a warming climate. The regional expression of this trend has been linked to changes in vertical redistribution of ocean heat and large-scale wind-field shifts. However, the short length of modern observations has hindered attempts to attribute this trend to anthropogenic forcing or natural variability. Here, we present two new decadal-resolution records of sea ice and sea surface temperatures that document pervasive regional climate heterogeneity in Indian Antarctic sea-ice cover over the last 2,000 years. Data assimilation of our marine records in a climate model suggests that the reconstructed dichotomous regional conditions were driven by the multi-decadal variability of the El Niño Southern Oscillation and Southern Annular Mode (SAM). For example, during an El Niño/SAM– combination, the northward sea-ice transport was reduced while heat advection from the subtropics to the Southern Ocean increased, which resulted in reduced sea-ice extent in the Indian sector as sea ice was compacted along the Antarctic coast. Our results therefore indicate that natural variability is large in the Southern Ocean and suggest that it has played a crucial role in the recent sea-ice trends and their decadal variability in this region. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
Citation statistics:
被引频次[WOS]:21   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169738
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: Université de Bordeaux, CNRS, EPHE, UMR 5805 EPOC, Pessac, France; EPHE-PSL Research University, Paris, France; ICARUS, Department of Geography, Maynooth University, Maynooth, Ireland; Earth and Life Institute (ELI), Université catholique de Louvain (UCL), Louvain-La-Neuve, Belgium; LOCEAN, UMR CNRS/UPCM/IRD/MNHN 7159, Université Pierre et Marie Curie, Paris, France; Norwegian Polar Institute, Tromsø, Norway; Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand; School of Earth, Energy, and Environmental Sciences, Stanford University, Stanford, CA, United States; Andaluz Institute of Earth Sciences, CSIC-University of Granada, Granada, Spain; Center for Advanced Marine Core Research, Kochi University, Nankoku, Japan; Ecosystems and Environment Research Programme, University of Helsinki, Helsinki, Finland

Recommended Citation:
Crosta X.,Etourneau J.,Orme L.C.,et al. Multi-decadal trends in Antarctic sea-ice extent driven by ENSO–SAM over the last 2,000 years[J]. Nature Geoscience,2021-01-01,14(3)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Crosta X.]'s Articles
[Etourneau J.]'s Articles
[Orme L.C.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Crosta X.]'s Articles
[Etourneau J.]'s Articles
[Orme L.C.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Crosta X.]‘s Articles
[Etourneau J.]‘s Articles
[Orme L.C.]‘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.