气候变化领域集成服务门户(CCPortal): Westward Acceleration of Tropical Stratopause Zonal Winds During Major Sudden Stratospheric Warming Events

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DOI	10.1029/2019GL086857
	Westward Acceleration of Tropical Stratopause Zonal Winds During Major Sudden Stratospheric Warming Events
	Koushik N.; Kumar K.K.; Siddiqui T.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	The tropical Mesosphere-Lower Thermosphere-Ionosphere system is found to show significant variabilities during Sudden Stratospheric Warming (SSW) events. Recent studies have highlighted the possible role played by modified background wind conditions in communicating the SSW-induced stratospheric perturbations to the Mesosphere-Lower Thermosphere-Ionosphere region. In the present study, changes in the background zonal winds at the tropical stratopause during major SSW events inferred from MERRA-2 reanalysis data sets, rocket observations, and model simulations are reported for the first time. The tropical stratopause shows enhanced westward winds during the course of major SSW events. Rocketsonde observations from a low latitude station Thumba (8.5 ° N,76.9 ° E) also showed significant westward acceleration during three major SSW events. Further, Specified Dynamics version of the Whole Atmosphere Community Climate Model simulations for the 2008–2009 SSW replicate the observed features. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Climate models; Ionospheric measurement; Rockets; Tropics; Wind; Background winds; Low latitudes; Mesosphere-lower thermospheres; Middle atmosphere dynamics; Model simulation; Planetary Waves; Sudden stratospheric warming; Whole atmosphere community climate models; Ionosphere; acceleration; atmospheric dynamics; latitude; latitudinal gradient; planetary wave; stratosphere; sudden stratospheric warming; weather station; zonal wind; India; Kerala; Thumba
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/170751
作者单位	Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India; Cochin University of Science and Technology, Cochin, India; GFZ German Research Centre for Geosciences, Potsdam, Germany
推荐引用方式 GB/T 7714	Koushik N.,Kumar K.K.,Siddiqui T.A.. Westward Acceleration of Tropical Stratopause Zonal Winds During Major Sudden Stratospheric Warming Events[J],2020,47(3).
APA	Koushik N.,Kumar K.K.,&Siddiqui T.A..(2020).Westward Acceleration of Tropical Stratopause Zonal Winds During Major Sudden Stratospheric Warming Events.Geophysical Research Letters,47(3).
MLA	Koushik N.,et al."Westward Acceleration of Tropical Stratopause Zonal Winds During Major Sudden Stratospheric Warming Events".Geophysical Research Letters 47.3(2020).