气候变化领域集成服务门户(CCPortal): Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia

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DOI	10.1016/j.accre.2022.11.011
	Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia
	LI, Xiang; Zhang, Ying-Juan; Gao, Hui; Ding, Ting
发表日期	2022
ISSN	1674-9278
起始页码	797
结束页码	802
卷号	13 期号:6 页码:6
英文摘要	In early November 2021, China experienced its second strongest cold wave event during 1981-2021. Although the Siberian high is considered the main factor influencing cold wave events in East Asia, it was not extremely strong from 4 to November 9, 2021. The spatial distribution of the correlation coefficients between the sea level pressure and the daily temperature anomalies shows a monopole pattern, with a notable negative centre in the southern part of the Siberian high monitoring domain. However, the correlation between the sea level pressure and temperature drop presents a typical dipole pattern, with a distinct negative centre in the northern monitoring domain and a positive centre in southern East Asia. During the November 2021 super cold wave process, the sea level pressure anomalies display a dipole pattern with a higher centre in the north and a lower centre in the south owing to the northward shift of the Intertropical Convergence Zone. The meridional pressure gradient index clearly reveals the non-negligible effect of subtropical low-pressure on this super cold wave process, indicating its possibly essential supplementary role in enhancing this process. The above findings provide a new understanding of its mechanism and long-range forecasts.
英文关键词	Cold wave; Siberian high; Meridional pressure gradient; Dipole pattern
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000925585200001
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273955
作者单位	China Meteorological Administration
推荐引用方式 GB/T 7714	LI, Xiang,Zhang, Ying-Juan,Gao, Hui,et al. Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia[J],2022,13(6):6.
APA	LI, Xiang,Zhang, Ying-Juan,Gao, Hui,&Ding, Ting.(2022).Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia.ADVANCES IN CLIMATE CHANGE RESEARCH,13(6),6.
MLA	LI, Xiang,et al."Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia".ADVANCES IN CLIMATE CHANGE RESEARCH 13.6(2022):6.