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DOI	10.5194/tc-10-2191-2016
	Mechanism of seasonal Arctic sea ice evolution and Arctic amplification
	Kim K.-Y.; Hamlington B.D.; Na H.; Kim J.
发表日期	2016
ISSN	19940416
卷号	10 期号:5
英文摘要	Sea ice loss is proposed as a primary reason for the Arctic amplification, although the physical mechanism of the Arctic amplification and its connection with sea ice melting is still in debate. In the present study, monthly ERA-Interim reanalysis data are analyzed via cyclostationary empirical orthogonal function analysis to understand the seasonal mechanism of sea ice loss in the Arctic Ocean and the Arctic amplification. While sea ice loss is widespread over much of the perimeter of the Arctic Ocean in summer, sea ice remains thin in winter only in the Barents-Kara seas. Excessive turbulent heat flux through the sea surface exposed to air due to sea ice reduction warms the atmospheric column. Warmer air increases the downward longwave radiation and subsequently surface air temperature, which facilitates sea surface remains to be free of ice. This positive feedback mechanism is not clearly observed in the Laptev, East Siberian, Chukchi, and Beaufort seas, since sea ice refreezes in late fall (November) before excessive turbulent heat flux is available for warming the atmospheric column in winter. A detailed seasonal heat budget is presented in order to understand specific differences between the Barents-Kara seas and Laptev, East Siberian, Chukchi, and Beaufort seas. © Author(s) 2016.
学科领域	air temperature; heat flux; longwave radiation; sea ice; sea surface; seasonal variation; turbulence; Arctic Ocean; Barents Sea; Beaufort Sea; Chukchi Sea; East Siberian Sea; Kara Sea; Laptev Sea
语种	英语
scopus关键词	air temperature; heat flux; longwave radiation; sea ice; sea surface; seasonal variation; turbulence; Arctic Ocean; Barents Sea; Beaufort Sea; Chukchi Sea; East Siberian Sea; Kara Sea; Laptev Sea
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/119577
作者单位	School of Earth and Environmental Sciences, Seoul National University, Seoul, 08826, South Korea; Department of Ocean, Earth and Atmospheric Sciences, Old Dominion University, Norfork, VA 23529, United States; Ocean Circulation and Climate Research Center, Korea Institute of Ocean Science and Technology, Ansan, 15627, South Korea
推荐引用方式 GB/T 7714	Kim K.-Y.,Hamlington B.D.,Na H.,et al. Mechanism of seasonal Arctic sea ice evolution and Arctic amplification[J],2016,10(5).
APA	Kim K.-Y.,Hamlington B.D.,Na H.,&Kim J..(2016).Mechanism of seasonal Arctic sea ice evolution and Arctic amplification.Cryosphere,10(5).
MLA	Kim K.-Y.,et al."Mechanism of seasonal Arctic sea ice evolution and Arctic amplification".Cryosphere 10.5(2016).