气候变化领域集成服务门户(CCPortal): Dependence of Sudden Stratospheric Warmings on Internal and External Drivers

CCPortal

DOI	10.1029/2019GL086444
	Dependence of Sudden Stratospheric Warmings on Internal and External Drivers
	Salminen A.; Asikainen T.; Maliniemi V.; Mursula K.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:5
英文摘要	A sudden stratospheric warming (SSW) is a large-scale disturbance of the wintertime stratosphere, which occurs especially in the Northern Hemisphere. Earlier studies have shown that SSW occurrence depends on atmospheric internal factors and on solar activity. We examine SSW occurrence in northern winters 1957/1958–2016/2017, considering several factors that may affect the SSW occurrence: Quasi-Biennial Oscillation (QBO), El Niño–Southern Oscillation (ENSO), geomagnetic activity, and solar radiation. We confirm the well-known result that SSWs occur more often in easterly QBO phase than in westerly phase. We show that this difference depends on how the QBO phase is determined. We find that the difference in SSW occurrence between easterly and westerly QBO winters strengthens (weakens) if geomagnetic activity or solar activity is low (high), or if the ENSO is in a cold (warm) phase. In easterly QBO phase significantly more SSWs occur during low geomagnetic activity than high activity. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric pressure; Geomagnetism; Solar energy; Solar radiation; Energetic particles; ENSO; Polar vortex; Stratospheric warmings; Sunspot activity; Climatology; El Nino-Southern Oscillation; geomagnetic field; Northern Hemisphere; solar activity; stratosphere; sudden stratospheric warming; warming; westerly
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/170595
作者单位	ReSoLVE Centre of Excellence, Space Climate Research Unit, University of Oulu, Oulu, Finland; Birkeland Centre for Space Science, Department of Physics and Technology, University of Bergen, Bergen, Norway
推荐引用方式 GB/T 7714	Salminen A.,Asikainen T.,Maliniemi V.,et al. Dependence of Sudden Stratospheric Warmings on Internal and External Drivers[J],2020,47(5).
APA	Salminen A.,Asikainen T.,Maliniemi V.,&Mursula K..(2020).Dependence of Sudden Stratospheric Warmings on Internal and External Drivers.Geophysical Research Letters,47(5).
MLA	Salminen A.,et al."Dependence of Sudden Stratospheric Warmings on Internal and External Drivers".Geophysical Research Letters 47.5(2020).