气候变化领域集成服务门户(CCPortal): Sensitivity of Greenland Ice Sheet surface mass balance to perturbations in sea surface temperature and sea ice cover: A study with the regional climate model MAR

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DOI	10.5194/tc-8-1871-2014
	Sensitivity of Greenland Ice Sheet surface mass balance to perturbations in sea surface temperature and sea ice cover: A study with the regional climate model MAR
	Noël B.; Fettweis X.; Van De Berg W.J.; Van Den Broeke M.R.; Erpicum M.
发表日期	2014
ISSN	19940416
卷号	8 期号:5
英文摘要	During recent summers (2007-2012), several surface melt records were broken over the Greenland Ice Sheet (GrIS). The extreme summer melt resulted in part from a persistent negative phase of the North Atlantic Oscillation (NAO), favoring warmer atmospheric conditions than normal over the GrIS. Simultaneously, large anomalies in sea ice cover (SIC) and sea surface temperature (SST) were observed in the North Atlantic, suggesting a possible connection. To assess the direct impact of 2007-2012 SIC and SST anomalies on GrIS surface mass balance (SMB), a set of sensitivity experiments was carried out with the regional climate model MAR forced by ERA-Interim. These simulations suggest that perturbations in SST and SIC in the seas surrounding Greenland do not considerably impact GrIS SMB, as a result of the katabatic wind blocking effect. These offshore-directed winds prevent oceanic near-surface air, influenced by SIC and SST anomalies, from penetrating far inland. Therefore, the ice sheet SMB response is restricted to coastal regions, where katabatic winds cease. A topic for further investigation is how anomalies in SIC and SST might have indirectly affected the surface melt by changing the general circulation in the North Atlantic region, hence favoring more frequent warm air advection towards the GrIS. © 2014 Author(s).
学科领域	coastal zone; environmental conditions; ice cover; ice sheet; katabatic flow; mass balance; North Atlantic Oscillation; regional climate; sea ice; sea surface temperature; Arctic; Atlantic Ocean; Atlantic Ocean (North); Greenland
语种	英语
scopus关键词	coastal zone; environmental conditions; ice cover; ice sheet; katabatic flow; mass balance; North Atlantic Oscillation; regional climate; sea ice; sea surface temperature; Arctic; Atlantic Ocean; Atlantic Ocean (North); Greenland
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/120044
作者单位	Department of Geography, University of Liège, Liège, Belgium; Institute for Marine and Atmospheric Research Utrecht, University of Utrecht, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Noël B.,Fettweis X.,Van De Berg W.J.,et al. Sensitivity of Greenland Ice Sheet surface mass balance to perturbations in sea surface temperature and sea ice cover: A study with the regional climate model MAR[J],2014,8(5).
APA	Noël B.,Fettweis X.,Van De Berg W.J.,Van Den Broeke M.R.,&Erpicum M..(2014).Sensitivity of Greenland Ice Sheet surface mass balance to perturbations in sea surface temperature and sea ice cover: A study with the regional climate model MAR.Cryosphere,8(5).
MLA	Noël B.,et al."Sensitivity of Greenland Ice Sheet surface mass balance to perturbations in sea surface temperature and sea ice cover: A study with the regional climate model MAR".Cryosphere 8.5(2014).