Ocean Modeling

When large areas are studied direct observations are not feasible. Instead a modeling effort must be made. At Polytec we use different ocean models, depending on the problem to be solved. For regional studies we apply the Regional Ocean Modeling System (ROMS) model that allows for coupling with both biological and sediment transport models. This is useful for many coastal purposes, e.g. studies of the ecosystems and fish resources.

In addition to the ROMS model Polytec has developed its own circulation model used to estimate the statistical flow field in fjords and other coastal areas. For large scale studies we apply the NEMO model.


Tidal forcing of the sea surface along the western part of Norway (southern Hordaland and northern Rogaland). The sea surface is gradually depressed in north and kept constant in south.

Tidal forcing of the sea surface for the Haugaland region The sea surface is oscillating in north and kept constant in south.

Evolution of the lightest waste particles released from a fish farm at different time steps. Green dots denote deposition at the sea floor