气候变化领域集成服务门户(CCPortal): West Antarctic surface melt triggered by atmospheric rivers

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DOI	10.1038/s41561-019-0460-1
	West Antarctic surface melt triggered by atmospheric rivers
	Wille J.D.; Favier V.; Dufour A.; Gorodetskaya I.V.; Turner J.; Agosta C.; Codron F.
发表日期	2019
ISSN	17520894
卷号	12 期号:11
英文摘要	Recent major melting events in West Antarctica have raised concerns about a potential hydrofracturing and ice shelf instability. These events often share common forcings of surface melt-like anomalous radiative fluxes, turbulent heat fluxes and föhn winds. Using an atmospheric river detection algorithm developed for Antarctica together with surface melt datasets, we produced a climatology of atmospheric river-related surface melting around Antarctica and show that atmospheric rivers are associated with a large percentage of these surface melt events. Despite their rarity (around 12 events per year in West Antarctica), atmospheric rivers are associated with around 40% of the total summer meltwater generated across the Ross Ice Shelf to nearly 100% in the higher elevation Marie Byrd Land and 40–80% of the total winter meltwater generated on the Wilkins, Bach, George IV and Larsen B and C ice shelves. These events were all related to high-pressure blocking ridges that directed anomalous poleward moisture transport towards the continent. Major melt events in the West Antarctic Ice Sheet only occur about a couple times per decade, but a 1–2 °C warming and continued increase in atmospheric river activity could increase the melt frequency with consequences for ice shelf stability. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	algorithm; atmospheric circulation; ice shelf; melting; meltwater; moisture content; radiative forcing; seasonality; Antarctic Ice Sheet; Antarctica; Marie Byrd Land; West Antarctic Ice Sheet; West Antarctica
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124578
作者单位	Institut des Géosciences de l’Environnement, CNRS/UGA, Saint Martin d’Hères, France; CESAM—Centre for Environmental and Marine Studies, Department of Physics, University of Aveiro, Aveiro, Portugal; British Antarctic Survey, Cambridge, United Kingdom; Laboratoire des Sciences du Climat et de l’Environnement, LSCE-IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; LOCEAN, Sorbonne Université, Paris, France
推荐引用方式 GB/T 7714	Wille J.D.,Favier V.,Dufour A.,et al. West Antarctic surface melt triggered by atmospheric rivers[J],2019,12(11).
APA	Wille J.D..,Favier V..,Dufour A..,Gorodetskaya I.V..,Turner J..,...&Codron F..(2019).West Antarctic surface melt triggered by atmospheric rivers.Nature Geoscience,12(11).
MLA	Wille J.D.,et al."West Antarctic surface melt triggered by atmospheric rivers".Nature Geoscience 12.11(2019).