Variability of the nitric oxide nightglow at Venus during solar minimum

Emilie M. Royer 1 Franck Montmessin 2 Emmanuel Marcq 2
1 LASP - Laboratory for Atmospheric and Space Physics [Boulder]
2 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : We present results from a NO airglow inversion method based on Venus Express data acquired from 2006 to 2010, during the last solar minimum period. We retrieve an altitude of 114 ± 10 km for the emission peak of the NO layer, with an associated scale height of 20 ± 10 km and an average limb brightness of 59.3 kR with a standard deviation of 63 kR. The inversion method allows for the quantification of the horizontal homogeneity of the NO layer. Images of the SPICAV field of view show a great variability of airglow morphologies, with NO layers that can be horizontally homogenous and continuous over distances exceeding 100 km, as well as sporadic patches of NO on a smaller horizontal scale. Frequent secondary emissions seen at lower tangent altitudes are the signatures of the complex dynamics of the upper Venusian atmosphere.
Keywords : Venus Upper atmosphere Airglow Nitric Oxide
Type de document :
Article dans une revue
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2016, 121 (5), pp.846-853. 〈10.1002/2016JE005013〉
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https://hal-insu.archives-ouvertes.fr/insu-01309689
Contributeur : Catherine Cardon <>
Soumis le : samedi 30 avril 2016 - 11:28:33
Dernière modification le : mercredi 19 septembre 2018 - 01:25:30

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INSU | UPMC | UVSQ | LATMOS | UNIV-PARIS-SACLAY

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Emilie M. Royer, Franck Montmessin, Emmanuel Marcq. Variability of the nitric oxide nightglow at Venus during solar minimum. Journal of Geophysical Research. Planets, Wiley-Blackwell, 2016, 121 (5), pp.846-853. 〈10.1002/2016JE005013〉. 〈insu-01309689〉

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