气候变化领域集成服务门户(CCPortal): Isobar Altitude Variations in the Upper Mesosphere Observed With IUVS-MAVEN in Response to Martian Dust Storms

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DOI	10.1029/2020GL087468
	Isobar Altitude Variations in the Upper Mesosphere Observed With IUVS-MAVEN in Response to Martian Dust Storms
	Gkouvelis L.; Gérard J.-C.; González-Galindo F.; Hubert B.; Schneider N.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	We report limb measurements of the oxygen dayglow emission at 297.2 nm performed during four Martian dust storms. The emission peak provides a good remote sensing tool to probe changes of the altitude of the 39 mPa pressure level for the first time during dust storms. We illustrate the time variation of these changes and compare them with the infrared opacity in the lower atmosphere. We find that the 39 mPa level rises in response to the increase in dust opacity. It reaches a plateau, and additional dust load does not significantly increase its altitude. Numerical simulations with the LMD global circulation model shows a similar response, except for the event observed during MY33 regional storm when the model fails to reproduce the observed variations. Observations collected during the onset of the global dust storm in June 2018 show that the upper atmosphere rapidly responds within two Martian days to the increased amount of tropospheric dust. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Dust; Ionosphere; Opacity; Remote sensing; Altitude variation; Emission peaks; Global circulation model; Limb measurements; Lower atmosphere; Pressure level; Remote sensing tools; Time variations; Storms; dust storm; Mars; mesosphere; planetary atmosphere; probe; remote sensing; upper atmosphere
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/170220
作者单位	LPAP, STAR Research institute, Université de Liège, Liège, Belgium; Instituto de Astrofìsica de Andalucía/CSIC, Granada, Spain; LASP, University of Colorado, Boulder, CO, United States
推荐引用方式 GB/T 7714	Gkouvelis L.,Gérard J.-C.,González-Galindo F.,et al. Isobar Altitude Variations in the Upper Mesosphere Observed With IUVS-MAVEN in Response to Martian Dust Storms[J],2020,47(12).
APA	Gkouvelis L.,Gérard J.-C.,González-Galindo F.,Hubert B.,&Schneider N.M..(2020).Isobar Altitude Variations in the Upper Mesosphere Observed With IUVS-MAVEN in Response to Martian Dust Storms.Geophysical Research Letters,47(12).
MLA	Gkouvelis L.,et al."Isobar Altitude Variations in the Upper Mesosphere Observed With IUVS-MAVEN in Response to Martian Dust Storms".Geophysical Research Letters 47.12(2020).