DOI: 10.1002/2016GL068092
论文题名: Future Arctic sea ice loss reduces severity of cold air outbreaks in midlatitudes
作者: Ayarzagüena B. ; Screen J.A.
刊名: Geophysical Research Letters
ISSN: 0094-9179
EISSN: 1944-8910
出版年: 2016
卷: 43, 期: 6 起始页码: 2801
结束页码: 2809
语种: 英语
英文关键词: Arctic sea ice loss
; climate change
; midlatitude cold air outbreaks
Scopus关键词: Ice
; Sea ice
; Arctic sea ice
; Atmospheric model
; Changing temperature
; Climate condition
; Cold air outbreak
; Mean temperature
; Midlatitudes
; Weather variability
; Climate change
; advection
; atmospheric modeling
; climate change
; cold air
; high temperature
; midlatitude environment
; sea ice
; Arctic
英文摘要: The effects of Arctic sea ice loss on cold air outbreaks (CAOs) in midlatitudes remain unclear. Previous studies have defined CAOs relative to the present-day climate, but changes in CAOs, defined in such a way, may reflect changes in mean climate and not in weather variability, and society is more sensitive to the latter. Here we revisit this topic but applying changing temperature thresholds relating to climate conditions of the time. CAOs do not change in frequency or duration in response to projected sea ice loss. However, they become less severe, mainly due to advection of warmed polar air, since the dynamics associated with the occurrence of CAOs are largely not affected. CAOs weaken even in midlatitude regions where the winter mean temperature decreases in response to Arctic sea ice loss. These results are robustly simulated by two atmospheric models prescribed with differing future sea ice states and in transient runs where external forcings are included. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977930011&doi=10.1002%2f2016GL068092&partnerID=40&md5=37cd77a777431ce638cdfa19947d197b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10142
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, United Kingdom
Recommended Citation:
Ayarzagüena B.,Screen J.A.. Future Arctic sea ice loss reduces severity of cold air outbreaks in midlatitudes[J]. Geophysical Research Letters,2016-01-01,43(6).