气候变化领域集成服务门户(CCPortal): Cyclone impact on sea ice in the central Arctic Ocean: A statistical study

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DOI	10.5194/tc-8-303-2014
	Cyclone impact on sea ice in the central Arctic Ocean: A statistical study
	Kriegsmann A.; Brümmer B.
发表日期	2014
ISSN	19940416
卷号	8 期号:1
英文摘要	This study investigates the impact of cyclones on the Arctic Ocean sea ice for the first time in a statistical manner. We apply the coupled ice-ocean model NAOSIM which is forced by the ECMWF analyses for the period 2006-2008. Cyclone position and radius detected in the ECMWF data are used to extract fields of wind, ice drift, and concentration from the ice-ocean model. Composite fields around the cyclone centre are calculated for different cyclone intensities, the four seasons, and different sub-regions of the Arctic Ocean. In total about 3500 cyclone events are analyzed. In general, cyclones reduce the ice concentration in the order of a few percent increasing towards the cyclone centre. This is confirmed by independent AMSR-E satellite data. The reduction increases with cyclone intensity and is most pronounced in summer and on the Siberian side of the Arctic Ocean. For the Arctic ice cover the cumulative impact of cyclones has climatologic consequences. In winter, the cyclone-induced openings refreeze so that the ice mass is increased. In summer, the openings remain open and the ice melt is accelerated via the positive albedo feedback. Strong summer storms on the Siberian side of the Arctic Ocean may have been important contributions to the recent ice extent minima in 2007 and 2012. © Author(s) 2014.
学科领域	albedo; AMSR-E; cyclone; ice cover; ice drift; ice-ocean interaction; satellite data; sea ice; temporal period; Arctic Ocean; Siberia
语种	英语
scopus关键词	albedo; AMSR-E; cyclone; ice cover; ice drift; ice-ocean interaction; satellite data; sea ice; temporal period; Arctic Ocean; Siberia
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/120151
作者单位	Meteorological Institute, University of Hamburg, Hamburg, Germany; Climate Service Center, Hamburg, Germany
推荐引用方式 GB/T 7714	Kriegsmann A.,Brümmer B.. Cyclone impact on sea ice in the central Arctic Ocean: A statistical study[J],2014,8(1).
APA	Kriegsmann A.,&Brümmer B..(2014).Cyclone impact on sea ice in the central Arctic Ocean: A statistical study.Cryosphere,8(1).
MLA	Kriegsmann A.,et al."Cyclone impact on sea ice in the central Arctic Ocean: A statistical study".Cryosphere 8.1(2014).