About the system

Operational Oceanographic System of the Gulf of Finland provides forecasts of temperature, salinity and sea level and consists of:

3D hydrodynamical model of the Gulf of Finland (GOFM);
3D hydrodynamical model of the Baltic Sea (HIROMB);
atmospheric model (HIRLAM);
block of assimilation of the observation data.

Weather forecast obtained by HIRLAM model (High Resolution Limited Area Model) and forecast of hydrological characteristics at the entrance to the Gulf of Finland by operational model HIROMB (HIgh Resolution Operational Model for the Baltic Sea) are used as boundary conditions. The model uses results of the HIROMB model calculations as initial conditions when initializing operational calculation at the first time step (t0 time). When data of field observations is available a procedure of data assimilation is used to correct initial conditions.