气候变化领域集成服务门户(CCPortal): Revisiting the trend in the occurrences of the "warm Arctic-cold Eurasian continent" temperature pattern

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DOI	10.5194/acp-20-13753-2020
	Revisiting the trend in the occurrences of the "warm Arctic-cold Eurasian continent" temperature pattern
	Yu L.; Zhong S.; Sui C.; Sun B.
发表日期	2020
ISSN	16807316
起始页码	13753
结束页码	13770
卷号	20 期号:22
英文摘要	The recent increasing trend of "warm Arctic, cold continents"has attracted much attention, but it remains debatable as to what forces are behind this phenomenon. Here, we revisited surface temperature variability over the Arctic and the Eurasian continent by applying the self-organizing-map (SOM) technique to gridded daily surface temperature data. Nearly 40 % of the surface temperature trends are explained by the nine SOM patterns that depict the switch to the current warm Arctic-cold Eurasia pattern at the beginning of this century from the reversed pattern that dominated the 1980s and 1990s. Further, no cause-effect relationship is found between the Arctic sea ice loss and the cold spells in the high-latitude to midlatitude Eurasian continent suggested by earlier studies. Instead, the increasing trend in warm Arctic-cold Eurasia pattern appears to be related to the anomalous atmospheric circulations associated with two Rossby wave trains triggered by rising sea surface temperature (SST) over the central North Pacific and the North Atlantic oceans. On interdecadal timescale, the recent increase in the occurrences of the warm Arctic-cold Eurasia pattern is a fragment of the interdecadal variability of SST over the Atlantic Ocean as represented by the Atlantic Multidecadal Oscillation (AMO) and over the central Pacific Ocean. © Author(s) 2020.
语种	英语
scopus关键词	artificial neural network; Atlantic Multidecadal Oscillation; decadal variation; Rossby wave; sea surface temperature; trend analysis; Arctic; Eurasia
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152823
作者单位	MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, China; Department of Geography, Environment and Spatial Sciences, Michigan State University, East Lansing, MI, United States; National Marine Environmental Forecasting Center, Beijing, China
推荐引用方式 GB/T 7714	Yu L.,Zhong S.,Sui C.,et al. Revisiting the trend in the occurrences of the "warm Arctic-cold Eurasian continent" temperature pattern[J],2020,20(22).
APA	Yu L.,Zhong S.,Sui C.,&Sun B..(2020).Revisiting the trend in the occurrences of the "warm Arctic-cold Eurasian continent" temperature pattern.Atmospheric Chemistry and Physics,20(22).
MLA	Yu L.,et al."Revisiting the trend in the occurrences of the "warm Arctic-cold Eurasian continent" temperature pattern".Atmospheric Chemistry and Physics 20.22(2020).