Improved Modeling of Mars' HDO Cycle Using a Mars' Global Climate Model

HDO and the D/H ratio are essential to understand Mars past present climate, in particular with regard evolution through ages of Martian water cycle. We here new modeling developments cycle LMD GCM. The study aims at exploring behaviour its sensitivity ice clouds formulation fractionation by condensation. Our GCM simulations compared observations provided Atmospheric Chemistry Suite (ACS) on board ESA/Roscosmos Trace Gas Orbiter, reveal that model quite well reproduces temperature vapor fields, which offers a good basis for representing comparison also emphasizes importance modelling effect supersaturation, resulting from microphysical processes clouds, correctly account middle-to-upper atmosphere. This work comes jointly detailed measured profiles TGO/ACS outputs, conducted companion paper Rossi et al. 2022 (this issue).