Development of a detailed tide and storm surge forecast system for the South West Coast of Ireland

Tozer, N.P. and Day, K. and Bunn, N. and Bridge, E. and Casey, J. and Duffy, T. and Sherlock, E. (2020) Development of a detailed tide and storm surge forecast system for the South West Coast of Ireland. In: TELEMAC-MASCARET User Conference 2020, 15 October 2020, Online.

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This paper describes the development and results of a TELEMAC-2D hydrodynamic model set up to potentially provide an operational forecast of tides and storm surges for Tralee and adjacent bays, in South West (SW) Ireland. The TELEMAC-2D model was set up using the latest bathymetry data including high resolution multibeam and LiDAR data. The model was initially forced with TPXO tidal data and wind and pressure data from ECMWF and Met Éireann and calibrated against available gauge data in SW Ireland including Tralee Bay. The initial calibration of the model showed good agreement against the measurements, with the tide and storm surge model predictions, close to, or within the specified minimum target accuracy and forecast delivery times. Following the first of two trial periods in winter 2018/2019 the model boundary tidal forcing was updated to use FES2014, which resulted in closer agreement with tidal predictions. The second live trial period was subsequently carried out during the autumn of 2019. An analysis of the results shows that the hydrodynamic model is in good agreement with measurements. Little difference was observed between the storm surge forecasts using the ECMWF or Met Éireann meteorological forcing, but it was expected that the higher resolution Met Éireann Harmonie data has the potential to provide more detail. This paper summarises the development model setup and results to date.

Item Type: Conference or Workshop Item (Paper)
Additional Information: The 2020 conference was postponed until 2021, but the papers already submitted have been published online.
Subjects: Maritime > General
Divisions: Maritime
Depositing User: Helen Stevenson
Date Deposited: 17 Dec 2020 09:54
Last Modified: 17 Dec 2020 09:54

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