Skip to Main content Skip to Navigation
Conference papers

Observing and modelling Mars' airglow

Abstract : SPICAM is the UV spectrometer onboard ESA's Mars Express, which has been recording for more than four years upper atmospheric emissions ([1], [2]). 70000 dayglow limb spectra were analysed using an updated and variable point spread function, yielding altitude profiles of the Cameron bands (a3Π − X1Σ) of CO, the CO2 + ultraviolet doublet (B2Σu + − X2Πg) at 289 nm and the oxygen emission at 297.2 nm. The seasonal evolution of these emissions (Fig. 1) exhibits an unexpected increase around LS = 140 degrees, which is correlated with a sudden increase of neutral densities due to a dust storm event. A comparison with a newlydeveloped kinetic electron and airglow model ([3], [4]) yields promising results on emission altitude profiles. Improvements on the neutral atmosphere and cross sections are discussed. The new data analysis performed enables the search for faint emissions underlying the main Cameron emission bands. This comparison and analysis work is being extended to nightside auroral emissions using multi-instrument data on Mars Express.
Document type :
Conference papers
Complete list of metadatas

Cited literature [1 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-00366192
Contributor : Béatrice Pibaret-Bourdon <>
Submitted on : Sunday, January 14, 2018 - 1:56:21 PM
Last modification on : Friday, September 25, 2020 - 11:20:12 AM
Long-term archiving on: : Sunday, April 15, 2018 - 12:21:11 PM

File

EPSC2008-A-00111-1.pdf
Publisher files allowed on an open archive

Identifiers

  • HAL Id : insu-00366192, version 1

Collections

Citation

Cyril Simon, Olivier Witasse, François Leblanc, Guillaume Gronoff, Jean Lilensten, et al.. Observing and modelling Mars' airglow. European Planetary Science Congress 2008, Sep 2008, Münster, Germany. pp.EPSC2008-A-00111. ⟨insu-00366192⟩

Share

Metrics

Record views

277

Files downloads

28