High-resolution modelling of a coastal harbour in the presence of strong tides and significant river runoff

摘要: In the context of Canada’s Ocean Protection Plan (OPP), improved coastal and near-shore modelling is needed to enhance marine safety emergency response capacity in aquatic environment. this study, Nucleus for European Modelling (NEMO) adopted develop an ocean forecasting system Saint John harbour Bay Fundy, on east coast Canada. The challenging regional oceanography characterized by presence some world’s strongest tides, significant river runoff complicated geometry. A three-level one-way nesting approach used downscale from a 1/12° North Atlantic-Arctic model very-high-resolution port-scale around harbour. three nested grids cover outer shelf, Fundy finally with resolutions 2.5 km, 500 m 100 m respectively. Due lack accurate data at River outlet, model’s lateral open boundary condition modified introduce forcing observed time series water level near mouth river. Evaluation observational demonstrates accuracy simulation tidal elevation currents, non-tidal temperature salinity. Comparison sea surface through increasing horizontal resolution. Virtual Lagrangian trajectories computed using modelled currents including wind effects show good agreement different types drifters. This study capability NEMO framework provide resolution