A Multiscale Approach for Constitutive Modelling of Snow *M. Miot (Goodyear Innovation Center), A. Wautier (INRAE, Aix-Marseille Universite, RECOVER), P. Polfer (Goodyear Innovation Center), F. Nicot (Universite Savoie Mont-Blanc), P. Philippe (INRAE, Aix-Marseille Universite, RECOVER), T. Fulop (Goodyear Innovation Center)