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Comparison of the HDO cycle in the LMD Mars GCM with ACS/TGO observations

Abstract : HDO and the D/H ratio are important in order to understand Mars past and present climate, in particular regarding the evolution through ages of the Martian water cycle. We present simulations of the HDO cycle with the LMD Mars GCM and compare the retrieved cycle with observations provided by the Atmospheric Chemistry Suite (ACS) on board the ESA/Roscosmos Trace Gas Orbiter (TGO). This work is a companion study of Vals et al. presented in session TP12, which presents the evolutions of the model since Rossi et al, (2021), and explores the behaviour of the D/H ratio cycle when taking into account the microphysics and radiative effect of clouds, as well as the effect of kinetics on fractionation during condensation.
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Submitted on : Sunday, August 1, 2021 - 1:58:49 PM
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Loïc Rossi, Margaux Vals, Franck Montmessin, Juan Alday, Ashwin Braude, et al.. Comparison of the HDO cycle in the LMD Mars GCM with ACS/TGO observations. European Planetary Science Congress. EPSC 2021, Sep 2021, virtual Meeting, France. ⟨10.5194/epsc2021-281⟩. ⟨insu-03311540⟩

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