Ocean Circulation Model Applications for the Estuary-Coastal-Open Sea Continuum

Coastal zones are among the most variable environments. As such, they require adaptive water management to ensure balance of economic and social interests with environmental concerns. High quality marine data hydrographic conditions e.g., sea level, temperature, salinity, currents needed provide a sound foundation for decision making process. Operational models sufficiently high forecasting resolution can be used further extension service toward coastal-estuary areas. The Limfjord is large shallow body in Northern Jutland, connecting North Sea West Kattegat East. It currently not covered by CMEMS service, despite its importance shipping, aquaculture mussel fisheries. In this study, we use operational HIROMB-BOOS Model (HBM) resolve full Baltic-Limfjord-North system horizontal 185.2 m Limfjord. study shows several factors that essential successfully modeling system: (a) computational efficiency flexible grids allow fjord, (b) an improved short wave radiation scheme model thermodynamics diurnal variability temperature very waters, (c) atmospheric forcing, (d) adequate river (e) accurate bathymetry narrow straits. With properly resolving these issues, able level forecast storm surge warning hydrography forecasts: salinity good ecosystem-based management. simulate complex spatial temporal pattern reproduce their diurnal, seasonal interannual stratification rather well. Its makes it possible transition from basin-scales coastal- estuary-scales seamlessly. total, HBM has been extended, include estuary Limfjord, performance regards predictions, suitable applications coastal applications.