气候变化领域集成服务门户(CCPortal): Unusual Changes in the Antarctic Middle Atmosphere During the 2019 Warming in the Southern Hemisphere

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DOI	10.1029/2020GL089199
	Unusual Changes in the Antarctic Middle Atmosphere During the 2019 Warming in the Southern Hemisphere
	Eswaraiah S.; Kim J.-H.; Lee W.; Hwang J.; Kumar K.N.; Kim Y.H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	A rare sudden stratosphere warming (SSW) occurred in the Southern Hemisphere polar region in 2019. The polar stratosphere temperature and planetary wave (PW) enhancements are found to be unusual from the history for 40 years; hence, it is an “Extremely-Rare” SSW. The distinct features of the mesosphere winds were observed during the SSW, in association with the traveling PWs in the stratosphere. The mesosphere zonal winds reversed for about 20 days before the peak SSW. Meteor radar (MR) and Modern-Era Retrospective Analysis for Research and Applications (MERRA)-2 observations indicate that the zonal wind reversal was descended with time, and the reversal was larger over ~72°S than the MR site (62°S). The MR detected the PWs of 14–22 days before and 8–12 days following the SSW in the mesosphere. We further noticed the enhancement of wavenumber 1 signature in the mesosphere during the peak SSW over the polar region. Thus, the polar middle-atmosphere is greatly affected by the SSW. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earth sciences; Geophysics; Meteor radars; Middle atmosphere; Planetary Waves; Polar Regions; Polar stratosphere; Research and application; Retrospective analysis; Southern Hemisphere; Ionosphere; global warming; mesosphere; meteor; planetary wave; polar region; radar altimetry; Southern Hemisphere; stratosphere
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/169620
作者单位	Department of Astronomy, Space Science, and Geology, Chungnam National University, Daejeon, South Korea; Division of Polar Climate Science, Korea Polar Research Institute, Incheon, South Korea; National Centre for Medium Range Weather Forecasting, Ministry of Earth Sciences, India
推荐引用方式 GB/T 7714	Eswaraiah S.,Kim J.-H.,Lee W.,et al. Unusual Changes in the Antarctic Middle Atmosphere During the 2019 Warming in the Southern Hemisphere[J],2020,47(19).
APA	Eswaraiah S.,Kim J.-H.,Lee W.,Hwang J.,Kumar K.N.,&Kim Y.H..(2020).Unusual Changes in the Antarctic Middle Atmosphere During the 2019 Warming in the Southern Hemisphere.Geophysical Research Letters,47(19).
MLA	Eswaraiah S.,et al."Unusual Changes in the Antarctic Middle Atmosphere During the 2019 Warming in the Southern Hemisphere".Geophysical Research Letters 47.19(2020).