气候变化领域集成服务门户(CCPortal): Thermospheric Composition O/N 2 Response to an Altered Meridional Mean Circulation During Sudden Stratospheric Warmings Observed by GOLD

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DOI	10.1029/2019GL086313
	Thermospheric Composition O/N 2 Response to an Altered Meridional Mean Circulation During Sudden Stratospheric Warmings Observed by GOLD
	Oberheide J.; Pedatella N.M.; Gan Q.; Kumari K.; Burns A.G.; Eastes R.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Observations from the recently launched Global-Scale Observations of the Limb and Disk (GOLD) instrument on the geostationary SES-14 communications satellite reveal a substantial response of the mean state of the thermosphere to the Sudden Stratospheric Warming (SSW) event in early January 2019. The observed O/N2 column density depletion of more than 10% starts at the onset of the SSW, maximizes at the time of the stratospheric wind reversal, and recovers toward the end of the SSW. A connection between SSW and thermospheric composition was previously predicted by model simulations but could not be observed before. The GOLD measurements support the scenario that enhanced global-scale wave activity during SSWs causes an enhanced wave driving of the lower thermosphere zonal mean circulation that leads to a reduction in lower thermosphere atomic oxygen, which then propagates through molecular diffusion into the upper thermosphere. ©2019. American Geophysical Union. All Rights Reserved.
英文关键词	Geostationary satellites; Ionosphere; Molecular oxygen; Tides; Communications satellite; Lower thermosphere; Model simulation; Molecular diffusion; Stratospheric warmings; Stratospheric winds; Sudden stratospheric warming; Thermospheric composition; Gold; atmospheric tide; geostationary satellite; instrumentation; measurement method; meridional circulation; nitrogen; oxygen; stratosphere; thermosphere; warming; wind velocity; zonal wind
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/170842
作者单位	Department of Physics and Astronomy, Clemson University, Clemson, SC, United States; National Center for Atmospheric Research, Boulder, CO, United States; LASP, University of Colorado Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Oberheide J.,Pedatella N.M.,Gan Q.,et al. Thermospheric Composition O/N 2 Response to an Altered Meridional Mean Circulation During Sudden Stratospheric Warmings Observed by GOLD[J],2020,47(1).
APA	Oberheide J.,Pedatella N.M.,Gan Q.,Kumari K.,Burns A.G.,&Eastes R.W..(2020).Thermospheric Composition O/N 2 Response to an Altered Meridional Mean Circulation During Sudden Stratospheric Warmings Observed by GOLD.Geophysical Research Letters,47(1).
MLA	Oberheide J.,et al."Thermospheric Composition O/N 2 Response to an Altered Meridional Mean Circulation During Sudden Stratospheric Warmings Observed by GOLD".Geophysical Research Letters 47.1(2020).