Poster (Scientific congresses and symposiums)
First Analysis of Martian Nightglow Seasonal Variations Observed by MAVEN's Imaging Ultraviolet Spectrograph
Stiepen, Arnaud; IUVS team
2015AGU fall meeting 2015
 

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Keywords :
Mars; airglow
Abstract :
[en] We report results from a study of nitric oxide nightglow over the northern hemisphere of Mars during winter and southern hemisphere during equinox. We present observations of the nitric oxide δ and γ band emissions between 190 and 270 nm by the Imaging UltraViolet Spectrograph on the MAVEN spacecraft. The emission reveals recombination of N and O atoms dissociated on the dayside of Mars, and is known to trace upper atmosphere hemispheric circulation patterns. We extend previous studies to higher latitudes, finding brighter emissions closer to the poles as predicted from global circulation models. Statistically significant variability suggests variation of the fluxes of N and O carried from the dayside thermosphere, as well as possible variations of the wind pattern in the nightside thermosphere and mesosphere.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Stiepen, Arnaud ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
IUVS team
Language :
English
Title :
First Analysis of Martian Nightglow Seasonal Variations Observed by MAVEN's Imaging Ultraviolet Spectrograph
Publication date :
15 December 2015
Event name :
AGU fall meeting 2015
Event date :
du 14 au 18 décembre 2015
Audience :
International
Available on ORBi :
since 15 December 2015

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