Limb observations of CO2 non-LTE emission in Mars atmosphere as observed by OMEGA/Mars Express

Arianna Piccialli (1) , P. Drossart (2) , M. A. Lopez-Valverde (3) , Anni Määttänen (4) , B. Gondet (5) , O. Witasse (1) , J.-P. Bibring (5)

1 ESTEC - European Space Research and Technology Centre
2 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
3 IAA - Instituto de Astrofísica de Andalucía
4 PLANETO - LATMOS
5 IAS - Institut d'astrophysique spatiale

We report here on OMEGA/MEx day-side limb observations of non-Local Thermodynamic Equilibrium (non-LTE) CO2 emission at 4.3 μm. Since January 2004 more than 500 limb profiles have been acquired at various locations, seasons and illuminations. The variability of the non-LTE emission with latitude, altitude, solar illumination and season was analyzed and compared to predictions derived by non-LTE model.

Domaines: Planétologie et astrophysique de la terre [astro-ph.EP]; Planétologie et astrophysique de la terre [astro-ph.EP]

Arianna Piccialli, P. Drossart, M. A. Lopez-Valverde, Anni Määttänen, B. Gondet, et al.. Limb observations of CO2 non-LTE emission in Mars atmosphere as observed by OMEGA/Mars Express. EPSC-DPS Joint Meeting 2011, Oct 2011, Nantes, France. ⟨hal-00768151⟩