气候变化领域集成服务门户(CCPortal): North Pacific zonal wind response to sea ice loss in the Polar Amplification Model Intercomparison Project and its downstream implications

CCPortal

DOI	10.1007/s00382-020-05352-w
	North Pacific zonal wind response to sea ice loss in the Polar Amplification Model Intercomparison Project and its downstream implications
	Ronalds B.; Barnes E.A.; Eade R.; Peings Y.; Sigmond M.
发表日期	2020
ISSN	0930-7575
起始页码	1779
结束页码	1792
卷号	55
英文摘要	Recent studies suggest that the wintertime North Pacific eddy-driven jet stream will strengthen and extend eastward in response to Arctic sea ice loss. Using output from the Polar Amplification Model Intercomparison Project we examine the mean change of the North Pacific wintertime zonal winds, and use cluster analysis to explore the change in sub-seasonal, wintertime variability in zonal winds between experiments with future Arctic sea ice concentrations relative to a pre-industrial run. Further, given the relationship between the North Pacific jet stream and North American weather regimes, we also examine the changes in surface temperature variability over North America. The four climate models investigated here exhibit robust agreement in both sign and structure of the atmospheric responses, with a strengthened wintertime North Pacific jet, an increase in anomalously strong and extended jet events, and a decreased frequency of weakened and equatorward-shifted jet events in response to reduced Arctic sea ice. The models also show changes in wintertime, North American surface temperature patterns that are consistent with the zonal wind changes seen in the North Pacific. There is an increase in the frequency of occurrence of the North American temperature dipole pattern, defined as anomalously warm temperatures in the west or northwest and anomalously cold temperatures in the east or southeast, and a decrease in the frequency of anomalously cold temperatures over North America. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Arctic amplification; Atmospheric circulation; Jet stream variability
语种	英语
scopus关键词	atmospheric circulation; climate modeling; future prospect; jet; sea ice; seasonal variation; zonal wind; Pacific Ocean; Pacific Ocean (North)
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145335
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; MetOffice Hadley Centre, Exeter, Devon, United Kingdom; Department of Earth System Science, University of California, Irvine, Irvine, CA, United States; Canadian Centre for Climate Modelling and Analysis, Environment and Climate Change Canada, Victoria, BC, Canada
推荐引用方式 GB/T 7714	Ronalds B.,Barnes E.A.,Eade R.,et al. North Pacific zonal wind response to sea ice loss in the Polar Amplification Model Intercomparison Project and its downstream implications[J],2020,55.
APA	Ronalds B.,Barnes E.A.,Eade R.,Peings Y.,&Sigmond M..(2020).North Pacific zonal wind response to sea ice loss in the Polar Amplification Model Intercomparison Project and its downstream implications.Climate Dynamics,55.
MLA	Ronalds B.,et al."North Pacific zonal wind response to sea ice loss in the Polar Amplification Model Intercomparison Project and its downstream implications".Climate Dynamics 55(2020).