Sea-ice ocean interactions occur at a diverse range of temporal and spatial scales, through a wide range of processes. In this seminar, I will first show evidence that the sea ice roughness becomes more heterogeneous in the presence of eddies by using an idealised re-entring channel simulation (NEMO + SI3). An increase in the strength of the eddies leads to a more spatially variable sea-ice cover during the freezing period and it is capable of modifying the variability of the ice thickness over winter.

The impact of eddies in the sea-ice processes will likely become more important as the Arctic transitions towards an open-ocean regime. Then, I will present a quantification of the impact sea-ice leads (openings in the sea ice cover) have on the ocean surface in the Arctic. To do this, we use a 1/60° pan-Arctic simulation, where we mask the LKF to compute the buoyancy flux and water mass transformations associated with the LKF and contrast it with the surrounding ocean.

Lieu
LOCEAN
Sorbonne Université, Campus Pierre et Marie Curie (Jussieu)
Couloir 45-55, 4^e étage, pièce 417