Article (Scientific journals)
Temperature estimation from hydroxyl airglow emission in the Venus night side mesosphere
Migliorini, Alessandra; Snels, M.; Gérard, Jean-Claude et al.
2018In Icarus, 300, p. 386-391
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Keywords :
atmosphere; Atmospheres; structure; Spectroscopy; Infrared observations
Abstract :
[en] The temperature of the night side of Venus at about 95 km has been determined by using spectral features of the hydroxyl airglow emission around 3 μm, recorded from July 2006 to July 2008 by VIRTIS onboard Venus Express. The retrieved temperatures vary from 145.5 to about 198.1 K with an average value of 176.3 ± 14.3 K and are in good agreement with previous ground-based and space observations. The variability with respect to latitude and local time has been studied, showing a minimum of temperature at equatorial latitudes, while temperature values increase toward mid latitudes with a local maximum at about 35°N. The present work provides an independent contribution to the temperature estimation in the transition region between the Venus upper mesosphere and the lower thermosphere, by using the OH emission as a thermometer, following the technique previously applied to the high-resolution O[SUB]2[/SUB](a[SUP]1[/SUP]Δ[SUB]g[/SUB]) airglow emissions observed from ground.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Migliorini, Alessandra
Snels, M.
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Soret, Lauriane  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Piccioni, G.
Drossart, P.
Language :
English
Title :
Temperature estimation from hydroxyl airglow emission in the Venus night side mesosphere
Publication date :
January 2018
Journal title :
Icarus
ISSN :
0019-1035
eISSN :
1090-2643
Publisher :
Elsevier, San Diego, United States - California
Volume :
300
Pages :
386-391
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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since 30 December 2017

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