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A brief review of recent Antarctic climate change

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A brief review of recent Antarctic climate change
Other Titles
최근 남극의 기후변화 고찰
Kim, Seong-Joong
Lim, Chang-Kyu
Antarctica; Climate Change; Southern Annular Mode
Issue Date
Kim, Seong-Joong, Lim, Chang-Kyu. 2018. "A brief review of recent Antarctic climate change". THE KOREAN JOURNAL OF QUATERNARY RESEARCH, 32(2): 30-40.
In response to the increase in anthropogenic greenhouse gases, the Arctic temperature is increasing rapidly by 2-3 times other regions. This larger Arctic warming than lower latitudes is called ‘Arctic Amplification’(Overland et al., 2017; Goose et al., 2018). Associated with the Arctic Amplification, the Arctic sea ice is declining rapidly and Greenland ice sheet is melting rapidly, especially around the coastal margins (State of Climate, 2018). However, Antarctic climate change appears to be different from the Arctic. In the western part of Antarctica, surface temperature is rising rapidly with large sea and land ice melting, but in the eastern part, there is little temperature change with slight increase in sea ice extent. The contrasting east-west temperature response is illustrated by the deepening of the Amundsen Sea Low whose upstream brings warm maritime air to the Antarctic peninsula and Amundsen-Bellingshausen Seas, but downstream air provides cold air to the Ross Sea, increasing sea ice. Besides, the increase in Southern Annular Mode (SAM) phase due to stratospheric ozone reduction enhances westerly winds, pushing sea ice northward by Ekman divergence and cooling east Antarctica. In this study, we review the recent Antarctic climate change and its possible causes.
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