Analysing Numerical DIffusion to Advance Models of the Ocean

The ANDIAMO project brings together mathematicians and oceanographers from SU around long term global ocean models. The main challenge is that the mesh size and time step are large, yielding non-negligible truncation errors and schemes dominated by numerical diffusion. Importantly, solutions for regional simulations do not transfer to our needs, as small errors in water mass characteristics have large impact on long term simulations. Thus “non-converged” methods and numerical analysis on coarse mesh are needed.

Another important part of the project is to establish a dialogue and to build further collaborations between mathematicians and oceanographers, around questions arising in climatology that require new numerical methods (interactions with continental ice, quantification of uncertainties…).

Scientific coordinators

Dr. Julie Deshayes, LOCEAN, SU
Dr. Nina Aguillon, LJLL, SU – Ange, Inria
Dr. Sybille Téchené, LOCEAN, SU


Major laboratories connected with the team:
  • LOCEAN, CNRS, Sorbonne Université
  • LJLL (laboratoire J.L. Lions), Sorbonne Université
  • ANGE, LJLL, Sorbonne Université, Inria
  • AIRSEA, Inria