KOPRI Repository

The internal origin of the west-east asymmetry of Antarctic climate change

Cited 0 time in wos
Cited 0 time in scopus
Metadata Downloads
Title
The internal origin of the west-east asymmetry of Antarctic climate change
Other Titles
최근 동-서 비대칭적 남극 기후 변화의 원인
Authors
Jun, Sang-Yoon
Kim, Joo-Hong
Choi, Jung
Kim, Seong-Joong
Kim, Baek-Min
An, Soon-Il
Keywords
climate variability; Antarctic climate change
Issue Date
2019
Citation
Jun, Sang-Yoon, et al. 2019. The internal origin of the west-east asymmetry of Antarctic climate change. Proceedings of the Autumn Meeting of KMS(Korean Meteorological Society), 2019. Gyeongju. 2019.10.30~2019.11.01.
Abstract
Recent Antarctic surface climate change has been characterised by greater warming trends in West Antarctica than in East Antarctica. Although this asymmetric feature is well recognised, its origin remains poorly understood. Here, by analysing observation data and multi-model results, we show that there exists a west-east asymmetric internal mode amplification in austral winter that originates from the combination of two local factors: the ocean temperature over the Amundsen-Bellingshausen seas and the Antarctic terrain. The warmer ocean temperature over the West Antarctic sector has positive feedback, with an anomalous upper-tropospheric anti-cyclonic circulation response centred over West Antarctica, in which the strength of the feedback is controlled by the Antarctic topographic layout and the annual cycle. The current west-east asymmetry of Antarctic surface climate change is undoubtedly of natural origin
URI
https://repository.kopri.re.kr/handle/201206/12410
Conference Name
Proceedings of the Autumn Meeting of KMS(Korean Meteorological Society), 2019
Conference Place
Gyeongju
Conference Date
2019.10.30~2019.11.01
Appears in Collections  
2019-2019, Investigation for the cause of east-west different climate responses in Antarctica (19-19) / Kim, Seong-Joong (PE19010)
Files in This Item

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

Browse