EGU21-9457, updated on 16 May 2022
https://doi.org/10.5194/egusphere-egu21-9457
EGU General Assembly 2021
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Global 3D modelling of Martian CO2 clouds

Christophe Mathé1, Anni Määttänen1, Joachim Audouard1,2, Constantino Listowski1,3, Ehouarn Millour4, François Forget4, Aymeric Spiga4, Déborah Bardet4, Lucas Teinturier4, Lola Falletti1, Margaux Vals6, Franscico González-Galindo5, and Franck Montmessin6
Christophe Mathé et al.
  • 1CNRS, LATMOS, Paris, France (christophe.mathe@latmos.ipsl.fr)
  • 2Currently at: WPO, Paris, France
  • 3DAM-Ile de France (DIF), Bruyères-le-Châtel, France
  • 4LMD/IPSL, Sorbonne Université, CNRS, Paris, France
  • 5Instituto de Astrofísica de Andalucía, CSIC, Granada, Spain
  • 6LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Guyancourt, France

In the Martian atmosphere, carbon dioxide (CO2) clouds have been revealed by numerous instruments around Mars from the beginning of the XXI century. These observed clouds can be distinguished by two kinds involving different formation processes: those formed during the winter in polar regions located in the troposphere, and those formed during the Martian year at low- and mid-northern latitudes located in the mesosphere (Määattänen et al, 2013). Microphysical processes of the formation of these clouds are still not fully understood. However, modeling studies revealed processes necessary for their formation: the requirement of waves that perturb the atmosphere leading to a temperature below the condensation of CO2 (transient planetary waves for tropospheric clouds (Kuroda et al., 20123), thermal tides (Gonzalez-Galindo et al., 2011) and gravity waves for mesospheric clouds (Spiga et al., 2012)). In the last decade, a state-of-the-art microphysical column (1D) model for CO2 clouds in a Martian atmosphere was developed at Laboratoire Atmosphères, Observations Spatiales (LATMOS) (Listowski et al., 2013, 2014). We use our full microphysical model of CO2 cloud formation to investigate the occurrence of these CO2 clouds by coupling it with the Global Climate Model (GCM) of the Laboratoire de Météorologie Dynamique (LMD) (Forget et al., 1999). We recently activated the radiative impact of CO2 clouds in the atmosphere. Last modeling results on Martian CO2 clouds properties and their impacts on the atmosphere will be presented and be compared to observational data.

How to cite: Mathé, C., Määttänen, A., Audouard, J., Listowski, C., Millour, E., Forget, F., Spiga, A., Bardet, D., Teinturier, L., Falletti, L., Vals, M., González-Galindo, F., and Montmessin, F.: Global 3D modelling of Martian CO2 clouds, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-9457, https://doi.org/10.5194/egusphere-egu21-9457, 2021.

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