Vertical distribution of dust and water ice during 2018 dust storm from TIRVIM and NIR solar occultations onboard ExoMars/TGO - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Vertical distribution of dust and water ice during 2018 dust storm from TIRVIM and NIR solar occultations onboard ExoMars/TGO

Résumé

The ExoMars Trace Gas Orbiter (TGO) is a joint ESA-Roscosmos mission to Mars that has been launched in March 2016. The aerobreaking phase has ended in February 2018 followed by the start of nominal scientific work on the near-circular 400 km orbit in April 2018. The Atmospheric Chemistry Suite (ACS) is a set of three spectrometers (NIR, MIR, and TIRVIM), capable to observe Mars atmosphere in solar occultations, nadir and limb geometry. TIRVIM instrument is a Fourier-spectrometer operating in the 1.7-17 µm spectral range. NIR instrument is a near-infrared spectrometer covering the 0.7-1.6 µm spectral range with a resolving power of ≥20,000. Both spectrometers are operated in solar occultation and nadir modes. The main fraction of aerosols on Mars consists of mineral dust, while H2O ice and CO2 ice crystals are also encountered depending on the season and location. Combination of TIRVIM and NIR spectra obtained in solar occultation mode permits spectral separation of dust and H2O ice clouds particles and retrieval of vertical distribution of aerosols. In this work, we will report analysis of aerosol properties during 2018 dust storm. Acknowledgements ExoMars is the space mission of ESA and Roscosmos. The ACS experiment is led by IKI Space Research Institute in Moscow. The project acknowledges funding by Roscosmos and CNES. Science operations of ACS are funded by Roscosmos and ESA. M. Luginin acknowledges the support from the Ministry of Science and Higher Education of the Russian Federation, grant #14.W03.31.0017.
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insu-04486969 , version 1 (02-03-2024)

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Mikhail Luginin, Anna Fedorova, Nikolay Ignatiev, Alexey Grigoriev, Alexander Trokhimovskiy, et al.. Vertical distribution of dust and water ice during 2018 dust storm from TIRVIM and NIR solar occultations onboard ExoMars/TGO. 21st EGU General Assembly, EGU2019, Apr 2019, Vienna, Austria. pp.id.10203. ⟨insu-04486969⟩
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