CE49 - Planétologie, structure et histoire de la Terre

3D radiative transfer in cloudy planetary atmospheres: applications to Titan, Venus and Mars – RaD-net

Submission summary

The main objective of this project is to develop a full 3D radiative transfer (RT) model in spherical geometry for the study of horizontally heterogeneous planetary atmospheres and surfaces. This versatile 3D RT model will be used to perform two primary scientific objectives regarding Titan: a) unveil the cycles of organic chemistry from the surface to the stratosphere, by characterizing the surface composition and the haze and clouds layers in Titan’s winter polar region, b) allow for correct predictions of thermal structures in winter polar region in the Titan IPSL-Global Climate Model. Secondary scientific objectives concern Venus and Mars: c) unveil the chemistry-microphysics interplay below and above Venus clouds and d) decipher the structure of the Martian winter polar vortices and the solar terminators to reveal the complex structures of clouds and photochemical species in these zones of strong gradients.

Project coordination

Sandrine Vinatier (Laboratoire d'études spatiales et d'instrumentation en astrophysique)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.


LMD Laboratoire de météorologie dynamique
IPGP Institut de physique du globe de Paris
LATMOS Laboratoire "Atmosphères, Milieux, Observations Spatiales"
LESIA Laboratoire d'études spatiales et d'instrumentation en astrophysique
GSMA Groupe de Spectrométrie Moléculaire et Atmosphérique

Help of the ANR 545,375 euros
Beginning and duration of the scientific project: September 2021 - 48 Months

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