Thierry Pellarin¹, Yann H Kerr², Luca Brocca³, Christian Massari³, Gérémy Panthou⁴, Guillaume Quantin⁵ and Carlos Roman-Cascon⁶, (1)CNRS, The Institute for Geosciences and Environmental research (IGE), Grenoble, France, (2)CNES French National Center for Space Studies, Toulouse Cedex 09, France, (3)Research Institute for Geo-Hydrological Protection National Research Council CNR, Perugia, Italy, (4)Université Grenoble Alpes, The Institute for Geosciences and Environmental research (IGE), Grenoble, France, (5)Institut des Géosciences de l'Environnement (IGE), Grenoble, France, (6)Laboratoire d'Aérologie - Observatoire Midi Pyrénées., Toulouse, France