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Communication Dans Un Congrès Année : 2021

One Martian year of trace gas survey by ACS MIR onboard ExoMars/TGO

Résumé

The ExoMars Trace Gas Orbiter (TGO) is a joint ESA-Roscosmos mission to Mars that was launched in March 2016. The nominal science phase with regular measurement started in March 2018, MY 34, LS = 143°. The Atmospheric Chemistry Suite (ACS) is a set of three spectrometers (NIR, MIR, and TIRVIM), capable of sounding Mars' atmosphere in nadir and solar occultation modes. The design of the middle infrared (MIR) channel was optimized to overachieve the primary science goal of the TGO mission by accomplishing the most sensitive measurements ever of the trace gases in the Martian atmosphere. The high aperture of the spectrometer, the ultra-high spectral resolution, and a fast onboard frame processing ensure quality meeting the highest standards. Besides methane survey on Mars, ACS MIR is capable of investigating many minor species never detected before: NO2, CH2O, HCl, HO2, and others. Having more than a full Martian year of regular measurements, we are are beneficial to be able to select areas and seasons with the best atmospheric conditions. The results of this analysis will be presented in the talk. The work is supported by the Russian Science Foundation (project No. 20-42-09035).
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Dates et versions

insu-04440220 , version 1 (05-02-2024)

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Alexander Trokhimovskiy, Anna Fedorova, Franck Montmessin, Franck Lefèvre, Oleg Korablev, et al.. One Martian year of trace gas survey by ACS MIR onboard ExoMars/TGO. 43rd COSPAR Scientific Assembly, Jan 2021, Sydney (Australia), Australia. pp.Abstract B4.1-0023-21 (oral), id.390. ⟨insu-04440220⟩
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