气候变化领域集成服务门户(CCPortal): Arctic climate: Changes in sea ice extent outweigh changes in snow cover

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DOI	10.5194/tc-12-3373-2018
	Arctic climate: Changes in sea ice extent outweigh changes in snow cover
	Letterly A.; Key J.; Liu Y.
发表日期	2018
ISSN	19940416
卷号	12 期号:10
英文摘要	Recent declines in Arctic sea ice and snow extent have led to an increase in the absorption of solar energy at the surface, resulting in additional surface heating and a further decline in snow and ice. Using 34 years of satellite data, 1982-2015, we found that the positive trend in solar absorption over the Arctic Ocean is more than double that over Arctic land, and the magnitude of the ice-albedo feedback is four times that of the snow-albedo feedback in summer. The timing of the high-to-low albedo transition has shifted closer to the greater insolation of the summer solstice over ocean, but further away from the summer solstice over land. Therefore, decreasing sea ice cover, not changes in terrestrial snow cover, has been the dominant radiative feedback mechanism over the last few decades. © 2018 Author(s). This work is distributed under the Creative Commons Attribution 4.0 License.
学科领域	absorption; albedo; feedback mechanism; insolation; melting; satellite data; sea ice; snow cover; Arctic Ocean
语种	英语
scopus关键词	absorption; albedo; feedback mechanism; insolation; melting; satellite data; sea ice; snow cover; Arctic Ocean
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/119044
作者单位	Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin, Madison, WI, United States; National Oceanic and Atmospheric Administration, Madison, WI, United States
推荐引用方式 GB/T 7714	Letterly A.,Key J.,Liu Y.. Arctic climate: Changes in sea ice extent outweigh changes in snow cover[J],2018,12(10).
APA	Letterly A.,Key J.,&Liu Y..(2018).Arctic climate: Changes in sea ice extent outweigh changes in snow cover.Cryosphere,12(10).
MLA	Letterly A.,et al."Arctic climate: Changes in sea ice extent outweigh changes in snow cover".Cryosphere 12.10(2018).