气候变化领域集成服务门户(CCPortal): Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice

CCPortal

DOI	10.1029/2019GL085666
	Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice
	Bonan D.B.; Blanchard-Wrigglesworth E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	Over the last 40 years observations show a teleconnection between summertime Pacific Ocean sea surface temperatures and September Arctic sea ice extent. However, the short satellite observation record has made it difficult to further examine this relationship. Here, we use 30 fully coupled general circulation models (GCMs) participating in Phase 5 of the Coupled Model Intercomparison Project to assess the ability of GCMs to simulate this teleconnection and analyze its stationarity over longer timescales. GCMs can temporarily simulate the teleconnection in continuous 40-year segments but not over longer, centennial timescales. Each GCM exhibits considerable teleconnection variability on multidecadal timescales. Further analysis shows that the teleconnection depends on an equally nonstationary atmospheric bridge from the subequatorial Pacific Ocean to the upper Arctic troposphere. These findings indicate that the modulation of Arctic sea ice loss by subequatorial Pacific Ocean variability is not fixed in time, undermining the assumption of teleconnection stationarity as defined by the satellite record. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Sea ice; Surface waters; Arctic sea ice; Atmospheric teleconnections; Coupled Model Intercomparison Project; Ocean-atmosphere interactions; predictability; Satellite observations; Sea surface temperature (SST); Teleconnections; Oceanography; atmosphere-ice-ocean system; CMIP; general circulation model; prediction; satellite data; sea ice; sea surface temperature; standing wave; summer; teleconnection; troposphere; Arctic Ocean; Pacific Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170817
作者单位	Environmental Science and Engineering, California Institute of Technology, Pasadena, CA, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Bonan D.B.,Blanchard-Wrigglesworth E.. Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice[J],2020,47(2).
APA	Bonan D.B.,&Blanchard-Wrigglesworth E..(2020).Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice.Geophysical Research Letters,47(2).
MLA	Bonan D.B.,et al."Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice".Geophysical Research Letters 47.2(2020).