Effect of the lateral exospheric transport on the horizontal hydrogen distribution at the exobase of Mars

Jean-Yves Chaufray 1 Roger Yelle 2 F. González-Galindo 3 François Forget 3 Miguel Lopez-Valverde 4 François Leblanc 1 Ronan Modolo 1
1 HEPPI - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
2 University of Arizona
3 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)
4 IAA - Instituto de Astrofísica de Andalucía
Abstract : We describe the horizontal distribution of hydrogen density at the exobase of Mars as simulated by coupling a 3D GCM with an exospheric balistic model, taking into account the flight balistic time of the exopheric hydrogen atoms. Such a description is more realistic than the assumptions used in our past study [4]. We simulate 4 Martian rotations at three different seasons. The horizontal variations of the hydrogen density at the exobase are reduced when the exospheric balistic transport is included compared to our previous simulations.
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Jean-Yves Chaufray, Roger Yelle, F. González-Galindo, François Forget, Miguel Lopez-Valverde, et al.. Effect of the lateral exospheric transport on the horizontal hydrogen distribution at the exobase of Mars. European Planetary Science Congress 2017 (ESPC 2017), Sep 2017, Riga, Latvia. pp.EPSC2017-252-1. ⟨insu-01597522⟩

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