The Nucleus for European Modeling of the Ocean (NEMO) is a general model of ocean circulation developed by a European consortium and used in many countries of Europe.
[4] Global configurations use ORCA tripolar grids, which allow the entire oceanic domain to be covered without singularity points.
Near these two points the mesh size tends to zero, making the use of modeling equations problematic.
To overcome the problem, the poles of the ORCA grids are positioned on the terrestrial sphere in such a way as to be located on continents.
The development of NEMO is organized and controlled by a European consortium[6] created in 2008 and formed by: