气候变化领域集成服务门户(CCPortal): Modulation by ENSO of the Relationship Between Stratospheric Sudden Warming and the Madden-Julian Oscillation

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DOI	10.1029/2020GL088894
	Modulation by ENSO of the Relationship Between Stratospheric Sudden Warming and the Madden-Julian Oscillation
	Ma J.; Chen W.; Nath D.; Lan X.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	The ENSO modulation on the relationship between the Madden-Julian Oscillation (MJO) and major stratospheric sudden warming (SSW) in the Northern Hemisphere winter is analyzed. The results indicate that the statistical relationship between the MJO and SSWs is robust during La Niña years but almost nonexistent during El Niño years. During La Niña years, a significant response of stratospheric temperature appears after certain MJO phases with a distribution consistent with MJO periodicity, whereas the response becomes nonsignificant during El Niño years. Further analysis indicates that ENSO influences the MJO-related geopotential height anomalies in middle to high latitudes of the upper troposphere, which leads to an increase in wavenumber 2 in La Niña winters. And wavenumber 2 plays a key role in generating the strong heat flux anomalies in the stratosphere. The results may help to explain the more frequent occurrence of extreme events in the stratosphere, such as SSW during La Niña winters. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Heat flux; Lanthanum; Modulation; Nickel compounds; Extreme events; Geopotential height anomalies; Madden-Julian oscillation; Northern Hemispheres; Statistical relationship; Stratospheric sudden warmings; Stratospheric temperature; Upper troposphere; Climatology; El Nino-Southern Oscillation; geopotential; heat flux; La Nina; Madden-Julian oscillation; Northern Hemisphere; troposphere; warming
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170044
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Ma J.,Chen W.,Nath D.,et al. Modulation by ENSO of the Relationship Between Stratospheric Sudden Warming and the Madden-Julian Oscillation[J],2020,47(15).
APA	Ma J.,Chen W.,Nath D.,&Lan X..(2020).Modulation by ENSO of the Relationship Between Stratospheric Sudden Warming and the Madden-Julian Oscillation.Geophysical Research Letters,47(15).
MLA	Ma J.,et al."Modulation by ENSO of the Relationship Between Stratospheric Sudden Warming and the Madden-Julian Oscillation".Geophysical Research Letters 47.15(2020).