气候变化领域集成服务门户(CCPortal): The influence of föhn winds on annual and seasonal surface melt on the Larsen C Ice Shelf, Antarctica

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DOI	10.5194/tc-14-4165-2020
	The influence of föhn winds on annual and seasonal surface melt on the Larsen C Ice Shelf, Antarctica
	Turton J.V.; Kirchgaessner A.; Ross A.N.; King J.C.; Munneke P.K.
发表日期	2020
ISSN	19940416
起始页码	4165
结束页码	4180
卷号	14 期号:11
英文摘要	Warm, dry föhn winds are observed over the Larsen C Ice Shelf year-round and are thought to contribute to the continuing weakening and collapse of ice shelves on the eastern Antarctic Peninsula (AP). We use a surface energy balance (SEB) model, driven by observations from two locations on the Larsen C Ice Shelf and one on the remnants of Larsen B, in combination with output from the Antarctic Mesoscale Prediction System (AMPS), to investigate the year-round impact of föhn winds on the SEB and melt from 2009 to 2012. Föhn winds have an impact on the individual components of the surface energy balance in all seasons and lead to an increase in surface melt in spring, summer and autumn up to 100 km away from the foot of the AP. When föhn winds occur in spring they increase surface melt, extend the melt season and increase the number of melt days within a year. Whilst AMPS is able to simulate the percentage of melt days associated with föhn with high skill, it overestimates the total amount of melting during föhn events and non-föhn events. This study extends previous attempts to quantify the impact of föhn on the Larsen C Ice Shelf by including a 4- year study period and a wider area of interest and provides evidence for föhn-related melting on both the Larsen C and Larsen B ice shelves. © 2020 Copernicus GmbH. All rights reserved.
英文关键词	energy balance; ice shelf; melting; mesoscale eddy; numerical model; quantitative analysis; summer; surface energy; Antarctic Peninsula; Antarctica; West Antarctica
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202228
作者单位	British Antarctic Survey, Cambridge, CB3 0ET, United Kingdom; School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Institute of Geography, Friedrich-Alexander University, Erlangen, 91058, Germany; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, 3508, Netherlands
推荐引用方式 GB/T 7714	Turton J.V.,Kirchgaessner A.,Ross A.N.,et al. The influence of föhn winds on annual and seasonal surface melt on the Larsen C Ice Shelf, Antarctica[J],2020,14(11).
APA	Turton J.V.,Kirchgaessner A.,Ross A.N.,King J.C.,&Munneke P.K..(2020).The influence of föhn winds on annual and seasonal surface melt on the Larsen C Ice Shelf, Antarctica.Cryosphere,14(11).
MLA	Turton J.V.,et al."The influence of föhn winds on annual and seasonal surface melt on the Larsen C Ice Shelf, Antarctica".Cryosphere 14.11(2020).