German Bight: 06°10'25”E - 10°00'00”E; 53°13'45”N - 56°26'45”N

BSHcmod V4 (Primitive Equations) (Dick et al..)

Daily

Spherical: zonal: 50”, meridional: 30” (approx. 900m)

(general) movable s-level co-ordinates, dynamically controlled free surface up to 36 cells of variable thickness (ref. thickness: ³ 2m) bottom layer of 3-4 m thickness

Composite of: BSH soundings and data from other German authorities, gridded data of dhi and IOW

Daily forecasts of German Weather Service (DWD) for: - wind, - air pressure, - temperature, - specific humidity, - cloud cover Bulk formula

Lateral forcing data from operational North Sea / Baltic Sea model of BSH (5 km). Interactive two-way coupling with parent model. Daily river run off

Half slip condition

Non linear bottom friction

Smagorinsky scheme

upstream scheme with flux-correction

Ri dependent mixing length scheme

Yes, drying and flooding of tidal flats

BSHdmod V4 + GKSS SPM module (Pleskachevsky et al. 2002 and 2005, Geyer et al.., 2006)

advection, horizontal and vertical diffusion due to currents and waves, sedimentation, re-suspension, erosion, consumption and bioturbation

bottom distribution of fine grained sediment lateral sources of SPM (e.g. fluvial input)

data form North Sea / Baltic Sea model of BSH (5 km)

BSHdmod V4 + ERGOM (Neumann et al., 2002)

21 “bulk” state variables: - e.g. 2 phytoplankton groups (flagellates and diatoms), - 2 bulk zooplankton groups (micro/meso), - bacteria, - detritus, - organic dissolved matter, - nutrient concentrations, - nitrogen in sediment and oxygen

Simulation of nutrient-phytoplankton dynamics resolving nitrogen and, phosphoruscarbon, oxygen, phosphorus and silicon cycles and including oxygen dynamics.

- river inputs - Lateral forcing data from North Sea / Baltic Sea model of BSH (5 km) - Atmospheric inputs for nitrogen and phosphorus