气候变化领域集成服务门户(CCPortal): Collaborative impact of the nao and atmospheric blocking on european heatwaves, with a focus on the hot summer of 2018

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DOI	10.1088/1748-9326/aba6ad
	Collaborative impact of the nao and atmospheric blocking on european heatwaves, with a focus on the hot summer of 2018
	Li M.; Yao Y.; Simmonds I.; Luo D.; Zhong L.; Chen X.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Two intense heatwaves of July and early August 2018 are found to be associated with a European blocking (EB) event accompanied by a series of consecutive positive North Atlantic Oscillation (NAO+) events. Further analyses show that the collaborative role of an EB event and its upstream NAO+ pattern could increase the frequency, persistence, magnitude and scale of heatwaves over Europe. Compared with NAO+-unrelated EB events, NAO+-related EB events are less movable (quasi-stationary) and more persistent over Europe, which could contribute to an increase in the intensity and persistence of heatwaves. In addition, the blocking high of this type has a northeast-southwest orientation with stronger warm airflow and less precipitation in northern and western Europe, where large scopes of higher temperatures tend to occur. In contrast, NAO+-unrelated EB events without orientation correspond to a trough in the south, which results in increased precipitation and cold air in the southern part of Europe, and thus high temperatures contract to the northern part of Europe. Moreover, considering that the NAO+ pattern leads the formation of an EB event, the NAO+ pattern might serve as a potential predictor for European heatwaves. Our conclusions are strongly supported by the analysis of CMIP6 historical simulations which also capture the differences of high temperatures and atmospheric circulations between NAO+-related EB events and NAO+-unrelated EB events. © 2020 The Author(s). Published by IOP Publishing Ltd
英文关键词	Atmospheric blocking; CMIP6; Collaborative impact; European heatwave; NAO; Teleconnection; Weather extremes
语种	英语
scopus关键词	Atmospheric pressure; Atmospheric blocking; Atmospheric circulation; Heatwaves; High temperature; Historical simulation; North Atlantic oscillations; Quasi-stationary; Western Europe; Atmospheric temperature; air-sea interaction; airflow; atmospheric blocking; atmospheric circulation; CMIP; cold air; heat wave; North Atlantic Oscillation; seasonality; Europe
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153523
作者单位	Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, China; School of Earth Sciences, University of Melbourne Victoria3010, Australia; Department of Atmospheric and Oceanic Sciences, Institute of Atmospheric Sciences, Fudan University, Shanghai, 200438, China
推荐引用方式 GB/T 7714	Li M.,Yao Y.,Simmonds I.,et al. Collaborative impact of the nao and atmospheric blocking on european heatwaves, with a focus on the hot summer of 2018[J],2020,15(11).
APA	Li M.,Yao Y.,Simmonds I.,Luo D.,Zhong L.,&Chen X..(2020).Collaborative impact of the nao and atmospheric blocking on european heatwaves, with a focus on the hot summer of 2018.Environmental Research Letters,15(11).
MLA	Li M.,et al."Collaborative impact of the nao and atmospheric blocking on european heatwaves, with a focus on the hot summer of 2018".Environmental Research Letters 15.11(2020).