Zooming in Arctic sea ice and snow cover: what can we learn from beryllium and thorium isotopes?

Mélanie Grenier1, Bleuenn Prijac1, Tia Anderlini2, Pieter Van Beek1, Thomas Zambardi1, Marc Souhaut1, Catherine Pradoux1 and Francois Lacan1, (1)LEGOS (CNRS/Toulouse University/CNES/IRD), Toulouse, France, (2)University of Victoria, Victoria, Canada