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Causes of the Extreme Hot Event on February 9, 2020, in Seymour Island, Antarctic Peninsula

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Title
Causes of the Extreme Hot Event on February 9, 2020, in Seymour Island, Antarctic Peninsula
Other Titles
2020년 2월 9일 남극 반도 세이모어 섬에서 발생한 극한 열파의 원인
Authors
배효준
김성중
김백민
권하택
Keywords
남극반도열전달열파
Issue Date
2022
Citation
배효준, et al. 2022. "Causes of the Extreme Hot Event on February 9, 2020, in Seymour Island, Antarctic Peninsula". FRONTIERS IN ENVIRONMENTAL SCIENCE, 10(865775): 1-9.
Abstract
On early February of 2020, two consecutive extreme warming events of three day interval at the similar location occurred over the Antarctic Peninsula (AP). The later event, that occurred on February 9, 2020, exhibited a second-highest temperature record of 15.5°C at Marambio station, located on Seymour Island, northeast of the AP. To understand the possible cause of the extreme warming event, we analyzed extreme warming events that occurred on Seymour Island during February over the past 40 years by using observational data from Marambio station alongside the European Center for Medium-Range Weather Forecasts Reanalysis v5 (ERA5) data. The results revealed that the extreme warming event on February 9, 2020 occurred due to the foehn and large-scale horizontal advection. In foehn winds, radiative heating and isentropic drawdown occur simultaneously. The horizontal advection of heat, which leads to extreme warming events, is associated with the strong blocking high in the upper and lower atmosphere. Contrary to the average characteristics of extreme warming events in February over the past 40 years, the extreme warming on February 9, 2020, occurred not only in the AP but also throughout entire West Antarctica.
URI
https://repository.kopri.re.kr/handle/201206/13505
DOI
http://dx.doi.org/10.3389/fenvs.2022.865775
Type
Article
Station
기타(남극반도)
Indexed
SCIE
Appears in Collections  
2022-2022, Understanding of Antarctic climate and environment and assessments of global influence (22-22) / Kim, Seong-Joong (PE22030)
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