The synthetic "sea-truth" data are winter daily averages obtained from thecontrol run (CR). The twin experiments consist in performing two runs: thefree run (FR) with summer-depleted phytoplankton initial conditions and theassimilated run (AR), in which, starting from the same FR phytoplanktonconcentrations, weekly surface biomasses averaged from the CR data areassimilated. The FR and AR initial conditions modify the winter bloom stateof the phytoplankton all over the basin and reduce the total nitrogen, i.e. the energy of the biochemical ecosystem.
The results of this feasibility study shows good performance of the systemin the case of phytoplankton, zooplankton, detritus and surface inorganicnitrogen. The weak results in the case of basin inorganic nitrogen and totalnitrogen, the latter nonperformant at surface, are discussed.
