Fraga, IgnacioCea, LuisPuertas, JerónimoEnxeñaría da Auga e do Medio Ambiente (GEAMA)2024-02-072024-02-072020Fraga, I., Cea, L. & Puertas, J. MERLIN: a flood hazard forecasting system for coastal river reaches. Natural Hazards 100, 1171–1193 (2020). https://doi.org/10.1007/s11069-020-03855-7http://hdl.handle.net/2183/35506Versión aceptada de https://doi.org/10.1007/s11069-020-03855-7[Abstract:] This study presents MERLIN, an innovative flood hazard forecasting system for predicting discharges and water levels at flood prone areas of coastal catchments. Discharge forecasts are preceded by a hindcast stage. During this stage, the hydrological models assimilate soil moisture and hydro-meteorological observations to evaluate soil infiltration capacities at the beginning of the discharge forecast. Predicted discharges are converted to water-level forecasts using the hydraulic model Iber+, a GPU-parallelized bidimensional flow model. Hydraulic models also assimilate tidal-level forecasts in order to define the boundary conditions of the models. The performance of MERLIN was evaluated over 4 months at three coastal catchments of 4.95, 16.96, and 83.9 km2. Forecasted discharges and water levels presented a good fit to observed values, especially at the larger catchments, which confirmed the potential utility of the presented system.eng© Springer Nature B.V. 2020Early warning systemFlood hazard forecastFlood risk managementHydraulic modellingHydrological modellingjournal articleopen access10.1007/s11069-020-03855-7