North Sea

Nitrate concentration parameters in the water column; Nitrite concentration parameters in the water column; Concentration of silicon species in suspended particulate material; Phosphate concentration parameters in the water column; Phosphorus concentrations in suspended particulate material; Inorganic chemical composition of sediment or rocks; Nutrient fluxes between the bed and the water column; Silicate concentration parameters in the water column; Dissolved inorganic nitrogen concentration in the water column; Dissolved total and organic nitrogen concentrations in the water column; Particulate total and organic phosphorus concentrations in the water column; Ammonium and ammonia concentration parameters in water bodies; Sedimentation flux of carbon, nitrogen or organic matter in the water column; Nitrogen concentrations in sediment; Concentration of silicon species in the water column; Dissolved total or organic phosphorus concentration in the water column

Sediment grabs

The different fractions of nutrients are simulated on different model grids for the North Sea. The model grid resolution varies from 1x1 km (near-shore) to 16x16 km (off-shore). The model input consists of emissions from the major rivers entering the North Sea, boundary conditions and emissions from dumping sites and atmospheric deposition. The model processes are based on the different processes of the nutrient cycle (e.g. mineralization, nitrification, autolyse and uptake by algae). Residual as well as inter-tidal currents are simulated with a hydrodynamic model. The model is calibrated against the yearly averaged in-situ measurements of Rijkswaterstaat (DONAR database).

Deltares
Boussinesqweg 1
Delft

2629 HV
Netherlands