气候变化领域集成服务门户(CCPortal): Barents-Kara sea ice and European winters in EC-Earth

CCPortal

DOI	10.1007/s00382-020-05174-w
	Barents-Kara sea ice and European winters in EC-Earth
	Ringgaard I.M.; Yang S.; Kaas E.; Christensen J.H.
发表日期	2020
ISSN	0930-7575
起始页码	3323
结束页码	3338
卷号	54
英文摘要	The potential link between decreasing Barents-Kara sea ice and cold winters in Europe is investigated using the enhanced resolution (horizontal atmospheric resolution of ∼80km) global, coupled climate model EC-Earth. Nudging sea ice only in the Barents-Kara Seas, five configurations of sea ice covers are used to assess the importance of the amount of sea ice in this region. Nudging in the coupled model is achieved by modifying the non-solar surface heat flux into the ice/ocean interface. The mean winter temperature response suggests a weak but statistically significant non-linear response with cooling over eastern Europe for moderate sea ice reductions in the Barents-Kara Seas, a weaker but still cold anomaly for minor reductions and warming for major reductions. However, this non-linear response is not reflected in the circulation. Instead, a negative mean sea level pressure anomaly over Barents-Kara Seas intensifies with sea ice reduction. In contrast to this, is the response in the coldest winters over central Europe: the larger the sea ice reduction, the stronger the Scandinavian pattern and the associated easterlies need to be to obtain cold winters over central Europe. The use of a coupled climate model is a potential explanation for the link between the intensified Scandinavian pattern and the cooling over Europe seen in this study, that is not observed in some atmosphere-only model studies. © 2020, The Author(s).
英文关键词	Arctic sea ice loss; Barents-Kara Seas; Cold European winters; Coupled global climate model; Sea ice
语种	英语
scopus关键词	climate modeling; glaciology; heat flux; ice cover; numerical model; sea ice; temperature profile; winter; Arctic Ocean; Barents Sea; Central Europe; Kara Sea; Scandinavia
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145532
作者单位	University of Copenhagen, Tagensvej 16, Copenhagen, 2100, Denmark; Danish Meteorological Institute, Lyngbyvej 100, Copenhagen, 2100, Denmark; NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Ringgaard I.M.,Yang S.,Kaas E.,et al. Barents-Kara sea ice and European winters in EC-Earth[J],2020,54.
APA	Ringgaard I.M.,Yang S.,Kaas E.,&Christensen J.H..(2020).Barents-Kara sea ice and European winters in EC-Earth.Climate Dynamics,54.
MLA	Ringgaard I.M.,et al."Barents-Kara sea ice and European winters in EC-Earth".Climate Dynamics 54(2020).