Revisiting the trend in the occurrences of the <q>warm Arctic-cold Eurasian continent</q> temperature pattern

doi:10.5194/acp-2020-413

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-413
	Revisiting the trend in the occurrences of the warm Arctic-cold Eurasian continent temperature pattern
	Lejiang Yu, Shiyuan Zhong, Cuijuan Sui, and Bo Sun
	2020-07-28
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
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 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 the 90s. Further, no cause-effect relationship is found between the Arctic sea-ice loss and the cold spells in high-mid latitude 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 wavetrains 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 Oscillations (AMO), and over the central Pacific Ocean.
领域	地球科学
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/286625
专题	地球科学
推荐引用方式 GB/T 7714	Lejiang Yu, Shiyuan Zhong, Cuijuan Sui, and Bo Sun. Revisiting the trend in the occurrences of the warm Arctic-cold Eurasian continent temperature pattern[J]. Atmospheric Chemistry and Physics,2020.
APA	Lejiang Yu, Shiyuan Zhong, Cuijuan Sui, and Bo Sun.(2020).Revisiting the trend in the occurrences of the warm Arctic-cold Eurasian continent temperature pattern.Atmospheric Chemistry and Physics.
MLA	Lejiang Yu, Shiyuan Zhong, Cuijuan Sui, and Bo Sun."Revisiting the trend in the occurrences of the warm Arctic-cold Eurasian continent temperature pattern".Atmospheric Chemistry and Physics (2020).