The ANHA is a regional configuration based on the Nucleus for European Modelling of the Ocean (NEMO
which is a state-of-art modeling framework widely used for oceanographic research, operational oceanography, seasonal forecasting and climate studies.
It includes five major components, the blue ocean (ocean dynamics) the
white ocean (sea ice) the green ocean (biogeochemistry) the adaptive mesh refinement software the assimilation component
The ocean ocean component of NEMO has been developed from the Oc ́ean PArall ́elis ́e (OPA), which is a primitive equation model for both global and regional
ocean circulation simulations1.