Simulating major storm surge events in a complex coastal region

• DOI: 10.1016/j.ocemod.2021.101802
• Publication Date: 2021-04-16T11:17:23Z
• Authors: Elin Andrée; Jian Su; Morten Andreas Da...; Kristine Skovgaar...; Martin Drews
• Keywords: Storm Surge; Coastal flood; Forcing (mathematics)

Climate change and increased coastal urbanization are causing low-lying coastlines to become increasingly susceptible the threat of extreme water levels flooding. Robust decision-making on adaptation in zone, based reliable ocean-modelling tools, is therefore crucially contingent accurate assessments current future storm surge hazards. This accuracy relies considerably quality wind forcing used ocean models. In this paper, we use a high-resolution, regional 3D model (HBM) covering North Sea Baltic simulate during three events with different dynamics patterns, order assess their impacts along Denmark's coastlines, which varying complexity. We demonstrate that able reproduce observed high-water accurately, indicating system well suited for producing simulations present projections surges high resulting damage potentials. Additionally, quantify level at acknowledged deficiencies otherwise most suitable atmospheric data set influence results simulations. found reducing temporal resolution – is, replacing two out every six time stamps linearly interpolated values preferable using original when recurring noise these stamps. As result, given events, depending stage reached storm's evolution, mean absolute errors can be reduced by 4.5 cm. emphasizes importance considering such fluctuations coupling high-resolution atmosphere