气候变化领域集成服务门户(CCPortal): Recent changes in heatwave characteristics over Korea

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DOI	10.1007/s00382-020-05420-1
	Recent changes in heatwave characteristics over Korea
	Yoon D.; Cha D.-H.; Lee M.-I.; Min K.-H.; Kim J.; Jun S.-Y.; Choi Y.
发表日期	2020
ISSN	0930-7575
起始页码	1685
结束页码	1696
卷号	55
英文摘要	Global warming and abnormal climate change have resulted in an increase in the frequency of severe heatwave events. Recently, a series of extreme heatwave events have occurred in South Korea, and the damage from these events has also been increasing. Thus, it is necessary to analyze the mechanisms for generating and developing heatwaves. In this study, the long-term trend for heatwave events in South Korea was investigated using cluster analysis. Heatwave events in a 38-year period in South Korea were defined, and their synoptic patterns were categorized into three clusters. The number of heatwave days of cluster 2, which is related to the anomalous positive geopotential height (GPH) over the Kamchatka Peninsula, was found to significantly increase in recent years (2000–2018) compared with the past (1981–1999). In contrast, the frequency of cluster 3 associated with a negative GPH anomaly over the Kamchatka Peninsula decreased in the same period. There were five regions, including northern China and the Kamchatka Peninsula, where the mid-level GPH significantly increased between 2000 and 2018. This change in GPH was positively (negatively) correlated with the patterns associated to long-term variability of heatwave days of cluster 2 (cluster 3). The long-term trends of the GPH anomalies over five regions showed a significant correlation with the North Atlantic Oscillation (NAO) index during midsummer. As a result, it is likely that the heatwave events related to cluster 2 (cluster 3) have increased (decreased) in South Korea because the long-term variability of the summer NAO has recently induced a favorable (unfavorable) atmospheric condition for cluster 2 (cluster 3). © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Cluster analysis; Heat wave; Long-term variability; North Atlantic Oscillation; South Korea
语种	英语
scopus关键词	climate change; geopotential; global warming; heat wave; North Atlantic Oscillation; Kamchatka; Kamchatka Peninsula; Russian Federation; South Korea
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/145307
作者单位	School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, South Korea; Department of Astronomy and Atmospheric Sciences, Kyungpook National University, Daegu, 41566, South Korea; Department of Atmospheric Science, Kongju National University, Gongju, South Korea; Unit of Arctic Sea-Ice Prediction, Korea Polar Research Institute, Incheon, 21990, South Korea
推荐引用方式 GB/T 7714	Yoon D.,Cha D.-H.,Lee M.-I.,et al. Recent changes in heatwave characteristics over Korea[J],2020,55.
APA	Yoon D..,Cha D.-H..,Lee M.-I..,Min K.-H..,Kim J..,...&Choi Y..(2020).Recent changes in heatwave characteristics over Korea.Climate Dynamics,55.
MLA	Yoon D.,et al."Recent changes in heatwave characteristics over Korea".Climate Dynamics 55(2020).