气候变化领域集成服务门户(CCPortal): Associations of atmospheric teleconnections with wintertime extratropical cyclones over East Asia and Northwest Pacific

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DOI	10.1007/s00382-021-05795-9
	Associations of atmospheric teleconnections with wintertime extratropical cyclones over East Asia and Northwest Pacific
	Gao M.; Sun Y.; Zheng Q.
发表日期	2021
ISSN	0930-7575
起始页码	1227
结束页码	1242
英文摘要	Extratropical cyclones (ETCs) over East Asia and Northwest Pacific are identified and tracked by applying an objective algorithm to the 850-hPa relative vorticity fields from the ERA-Interim reanalysis. A total of 2866 ETCs originating at the western side of the date line have been identified in the extended November–March winters from 1979 to 2018. The ETC tracks are counted and visualized using a hexagonal tessellation rather than the regular longitude–latitude grids. Two generalized linear models (GLMs), Poisson regression model and Gamma regression model, are firstly applied to investigate the associations of wintertime ETCs with three atmospheric teleconnection patterns. The West Pacific (WP) pattern and the Pacific/North American (PNA) pattern are more responsible for the meridional variability of ETC activities in the North Pacific, while the influence of the Polar/Eurasia pattern on ETC activities is negligible. Results of composite analysis are qualitatively consistent with that of regression analysis. Composite maps of differences of jet stream, thermal gradient and mid-tropospheric baroclinicity in the positive and negative phases of teleconnection patterns also support the close associations of ETC activities with WP and PNA teleconnection patterns. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Generalized linear model; Hexagon grid; Inhomogenous Poisson process; Teleconnection pattern
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/183466
作者单位	School of Mathematics and Information Sciences, Yantai University, Yantai, 264005, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
推荐引用方式 GB/T 7714	Gao M.,Sun Y.,Zheng Q.. Associations of atmospheric teleconnections with wintertime extratropical cyclones over East Asia and Northwest Pacific[J],2021.
APA	Gao M.,Sun Y.,&Zheng Q..(2021).Associations of atmospheric teleconnections with wintertime extratropical cyclones over East Asia and Northwest Pacific.Climate Dynamics.
MLA	Gao M.,et al."Associations of atmospheric teleconnections with wintertime extratropical cyclones over East Asia and Northwest Pacific".Climate Dynamics (2021).