Modeling The Evolution Of Climates Over Long Period: The Planetary Evolution
Model
R. Vandemeulebrouck, F.Forget, L.Lange, E.Millour, A.Spiga, A.Bierjon, A.Delavois, J.Naar, Laboratoire De
Météorologie Dynamique, Institut Pierre-Simon Laplace (Lmd/Ipsl), Sorbonne Université, Centre National De
La Recherche Scientifique (Cnrs), École Polytechnique, École Normale Supérieure (Ens), Paris, France
Romain.Vandemeulebrouck@Lmd.Ipsl.Fr.

Introduction:
Studies Show That The Variation Of Orbital
Parameters Can Deeply Impact The Climate [Hays Et
Al., 1976]. On Earth, Small Variations Of ±1.3° Of
Obliquity Are Responsible For Ice Ages [Imbrie And
Imbrie, 1979]. Laskar Et Al. [2004] Indicate That The
Obliquity Of Mars Can Vary Between 0° And 60°, This
Suggests That Huge Climatic Variations Could Have
Happen On Mars In The Last Myr.

Fig.1 : Martian Obliquity For The Last And Next Millions
Of Years (Laskar Et Al. [2004])