Mechanism of seasonal Arctic sea ice evolution and Arctic amplification SCIE SCOPUS

Cited 18 time in WEB OF SCIENCE Cited 19 time in Scopus
Title
Mechanism of seasonal Arctic sea ice evolution and Arctic amplification
Author(s)
Kim, Kwang-Yul; Hamlington, Benjamin D.; Na, Hanna; Kim, Jinju
Publication Year
2016-09-22
Abstract
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.
ISSN
1994-0416
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1434
DOI
10.5194/tc-10-2191-2016
Bibliographic Citation
CRYOSPHERE, v.10, no.5, pp.2191 - 2202, 2016
Publisher
COPERNICUS GESELLSCHAFT MBH
Subject
POLAR AMPLIFICATION; ALBEDO FEEDBACK; CLIMATE-CHANGE; VARIABILITY; EOFS
Type
Article
Language
English
Document Type
Article
Publisher
COPERNICUS GESELLSCHAFT MBH
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