DOI: 10.5194/tc-10-2191-2016
Scopus记录号: 2-s2.0-84989170935
论文题名: Mechanism of seasonal Arctic sea ice evolution and Arctic amplification
作者: Kim K ; -Y ; , Hamlington B ; D ; , Na H ; , Kim J
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 5 起始页码: 2191
结束页码: 2202
语种: 英语
英文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75073
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Ocean, Earth and Atmospheric Sciences, Old Dominion University, Norfork, VA, United States; Ocean Circulation and Climate Research Center, Korea Institute of Ocean Science and Technology, Ansan, South Korea
Recommended Citation:
Kim K,-Y,, Hamlington B,et al. Mechanism of seasonal Arctic sea ice evolution and Arctic amplification[J]. Cryosphere,2016-01-01,10(5)