KOPRI Repository

Critical role of extreme midlatitude-storms in Arctic amplification

Cited 0 time in wos
Cited 0 time in scopus
Metadata Downloads
Title
Critical role of extreme midlatitude-storms in Arctic amplification
Other Titles
북극 온난화 극대화에 극한 중위도 바람폭풍의 중요한 역할
Authors
Hong, Ja-Young
Kim, Baek-Min
Baek, Eun-Hyuk
Kim, Joo-Hong
Kim, Seong-Joong
Issue Date
2019
Citation
Hong, Ja-Young, et al. 2019. Critical role of extreme midlatitude-storms in Arctic amplification. 2019 Korean Meteorological Society fall academic conference. Gyeongju. 2019.10.30~2019.11.01.
Abstract
Here we show that Atlantic windstorms of extreme category in northern winter tend to follow a well-defined route toward the Atlantic sector of Arctic, and that heat and moisture transported by these extreme storms significantly warm the Arctic. A positive North Atlantic Oscillation condition and the associated intensified upper-level Atlantic jet provide favorable conditions for those extreme storm developments through enhanced vertical wind shear. These extreme windstorms lead to two discernible impacts on the Arctic: 1) enhanced poleward energy transport by moisture intrusion to the Arctic, which accompanies increased longwave downward radiation and 2) the occurrence of blocking-like patterns after the storm break-up. During these periods, significant Arctic warming was observed of a 10-fold increase versus normal and weak storms. The poleward deflections of extreme storms, and the Arctic warming driven by such storms, are well simulated in numerical experiments with ocean-atmosphere coupled models.
URI
https://repository.kopri.re.kr/handle/201206/12244
Conference Name
2019 Korean Meteorological Society fall academic conference
Conference Place
Gyeongju
Conference Date
2019.10.30~2019.11.01
Appears in Collections  
2019-2019, Development and Application of the Korea Polar Prediction System (KPOPS) for Climate Change and Disasterous Weather Events (19-19) / Kim, Joo-Hong (PE19130)
Files in This Item

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

Browse