KOPRI Repository

Impact of strong katabatic wind event variability on sea ice dynamics in Terra Nova Bay Polynya, Antarctica

Cited 0 time in wos
Cited 0 time in scopus
Title
Impact of strong katabatic wind event variability on sea ice dynamics in Terra Nova Bay Polynya, Antarctica
Other Titles
남극 테라노바만 폴리냐의 해빙 역학에 대한 강한 활강풍 변동성의 영향
Authors
Yuanyuan Xu
Rui Mao
Kim, Seong-Joong
Minghu Ding
Daoyi Gong
Keywords
강풍 이벤트테라노바만해빙
Issue Date
2025-10
Citation
Yuanyuan Xu, et al. 2025. "Impact of strong katabatic wind event variability on sea ice dynamics in Terra Nova Bay Polynya, Antarctica". Environmental Research Letters, 20(11): 0-0.
Abstract
Polynyas along the Antarctic coastline are essential for sea ice production and the formation of Antarctic Bottom Water (AABW). They are formed and maintained by strong and persistent katabatic winds that push the ice away from the coast. Satellite data, in-situ meteorological observations and Reanalysis datasets all indicate a decline in sea ice concentration (SIC) over the Terra Nova Bay Polynya (TNBP) from 2013 to 2022, consistent with the occurrence of an increasing trend of strong katabatic wind events (SKWEs). On the interannual timescale, significant correlations between the TNBP area and the duration of SKWEs were observed in austral summer, autumn and winter, and also in April and October during 2003?2022. Sea ice volume budget analysis shows that SKWEs drive rapid sea-ice removal through advection and divergence, whereas thermodynamic processes dominate sea ice formation on an annual basis. The increase in SKWEs was associated with a deepened and southwestward-displaced Amundsen Sea Low (ASL) and an enhanced pressure gradient between the interior plateau and the coast, both potentially linked to a more positive Southern Annular Mode (SAM). These findings provide a mechanistic understanding of long-term polynya variability, with implications for regional sea-ice changes and AABW.
URI
https://repository.kopri.re.kr/handle/201206/16596
DOI
http://dx.doi.org/10.1088/1748-9326/ae06bb
Type
Article
Station
Jang Bogo Station
Indexed
SCIE
Appears in Collections  
2025-2025, 남극 기후 환경 변화 이해와 전지구 영향 평가 (25-25) / 정의석 (PE25030)
Files in This Item
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse