HAMSOM
The three-dimensional primitive equation model, HAMSOM (HAMburg Shelf Ocean Model), was developed by Backhaus (1985) for the North Sea (Backhaus and Hainbucher, 1986). The model is based upon a semi-implicit numerical scheme described by Stronach et al. (1993). However, for the barotropic mode the model is implicit so that relatively large computational time steps can be employed.