We focus on the following research topics:

• To develop the new neXt generation Sea Ice Model, neXtSIM.

This new model includes the Maxwell elasto brittle (MEB) rheology to simulate sea ice dynamics and an adapted code to simulate sea ice thermodynamics including the feedbacks between thermodynamical and dynamical processes.

• To develop and implement a new module into neXtSIM that resolves waves-ice interactions in the Marginal Ice Zone.

• To provide daily sea-ice forecasts for the entire Arctic region using the neXtSIM-F forecast system based on the new neXtSIM Lagrangian sea ice model.

• To understand why sea ice behaves as it does and caracterize the scaling properties of the underlying physics responsible of its dynamical behavior using both model and observations.

• To assess and quantify the role played by the sea ice cover motion and fracturing in affecting the upper ocean mixing, and regulating the primary production in the Arctic Ocean.

• To explain the reasons for the Arctic sea ice cover reduction observed over the last few decades, in a context of polar amplification and climate change.