气候变化领域集成服务门户(CCPortal): The Synchronization between the Zonal Jet Stream and Temperature Anomalies Leads to an Extremely Freezing North America in January 2019

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DOI	10.1029/2020GL089689
	The Synchronization between the Zonal Jet Stream and Temperature Anomalies Leads to an Extremely Freezing North America in January 2019
	Xu F.; Liang X.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	In late January 2019, a severe cold air outbreak brought the lowest temperatures in over 20 years to Midwestern United States and Eastern Canada. With a newly developed functional analysis tool, namely, multiscale window transform, and the multiscale window transform-based theory of canonical transfer, it is found, based on the data from National Center for Environmental Prediction, that the cold surge, though initialized by the southward migration of the Arctic air mass, is mainly caused by a synchronization between perturbation temperature and perturbation winds, which leads to a very strong baroclinic instability and hence an explosive growth of available potential energy on the cold surge scale window. The cold event is actually a part of a localized stationary wave train, sandwiched between two warming centers, over western North America and over Atlantic. The synchronization can serve as a precursor for this extremely severe cold surge. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Explosives; Potential energy; Baroclinic instability; Cold air outbreak; Explosive growth; Multiscale window transforms; National center for environmental predictions; Perturbation winds; Stationary waves; Temperature anomaly; Synchronization; baroclinic instability; cold air; extreme event; jet stream; perturbation; potential energy; standing wave; temperature anomaly; zonal flow; Arctic; Atlantic County; Canada; Midwest; New Jersey; United States
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/169660
作者单位	School of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing, China; Center for Ocean-Atmosphere Dynamical Studies, Nanjing Institute of Meteorology, Nanjing, China; School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, China
推荐引用方式 GB/T 7714	Xu F.,Liang X.S.. The Synchronization between the Zonal Jet Stream and Temperature Anomalies Leads to an Extremely Freezing North America in January 2019[J],2020,47(19).
APA	Xu F.,&Liang X.S..(2020).The Synchronization between the Zonal Jet Stream and Temperature Anomalies Leads to an Extremely Freezing North America in January 2019.Geophysical Research Letters,47(19).
MLA	Xu F.,et al."The Synchronization between the Zonal Jet Stream and Temperature Anomalies Leads to an Extremely Freezing North America in January 2019".Geophysical Research Letters 47.19(2020).