Dublin Bay Water Quality Modelling from Catchment to Coast

• DOI: 10.5194/egusphere-egu2020-20824
• Publication Date: 2020-03-10T05:50:03Z
• Authors: Aisling Corkery; Guanghai Gao; John O'Sullivan; Liam Reynolds; Laura Sala-Comorera; Niamh Martin; Jayne Stephens; Tristan Nolan; Wim Meijer; Bartholemew Maste...; Conor Muldoon; Gregory O'Hare
• Keywords: 13. Climate action; 11. Sustainability; 14. Life underwater; 15. Life on land; 6. Clean water

<p>This paper presents the development and preliminary results of a deterministic modelling system for bathing water quality assessment in Dublin Bay, Ireland.  The integrates functional capacity simulating transport fate diffuse agricultural pollutants (utilising both NAM rainfall-runoff model conjunction with MIKE 11), discharges from urban drainage network (through Urban InfoWorks software), ultimate Bay (coastal domain utilises 3-dimensional 3 code).  work presented forms part EU INTERREG funded Acclimatize project (www.acclimatize.eu) that is investigating longer-term pressures may arise context changing climate (particularly predicted changes precipitation totals patterns).  Model calibration validation has been underpinned by extensive data collection within catchments discharging to bay area itself.  Catchment includes observing hydrometeorological variables establishing relationships measured flows at catchment sub-catchment scales.  Coastal relates quality, coastal hydrodynamics (current speed direction collected ADCP deployments multiple monitoring points bay), temperature salinity.  A nested approach where modelled larger Irish Sea adopted.  Tidal constituents along seaward boundaries this have calibrated correlate well tidal measurements set established tide gauges domain.  Bottom friction was produce good correlations simulated current direction.  Preliminary indicate faecal indicator bacteria study adequately represented spring neap conditions.</p>