Dr. Patrick Morrissey
Martin Naughton Assistant Professor, Civil Struct & Env. Eng.
Biography
Patrick Morrissey is an Assistant Professor in Environmental Process Engineering in the School of Engineering, Trinity College Dublin. His research interest involves studying how various processes occur in the natural environment and then developing numerical models which represent these systems. He has a particular focus on studying the fate and transport water-borne pollutants in the natural and built environment, specifically the sources and fate of contaminants in rivers and groundwater. His research involves field studies which are then used to develop models of the environmental system to gain further insight and conduct scenario analysis. Prior to joining Trinity College in 2022, Patrick worked in the Environmental Protection Agency (EPA) as a numerical modeller developing models and tools aimed a Water Framework Directive assessment and measures development. He has also spent several years working in the environmental engineering industry specialising in the area of hydrological and hydrogeological assessment and has also completed a number of post-doctoral research projects.
Publications and Further Research Outputs
Peer-Reviewed Publications
Pereiro Dieg, Dabrowski Tomas, Tully Olive, Lyons Kiera, Morrisey Patrick, Daly Eogha, Basu Bidroh, Kelly Diarmui, Oâ Halloran Gerr, Oâ Dowd Col, Nolan Glen, Gill Laurenc, Habitat suitability assessment for native oyster based on temperature and salinity modelling in an estuarine environment, Ocean Dynamics, 75, (10), 2025, p86-
Blanc, Charlotte and Oldbury-Thomas, Donna and Morrissey, Patrick, Mental Health Impacts of Agri-Environmental Schemes: Insights from Agricultural Advisors in France and Ireland, Sustainability, 17, (17), 2025
Kristina Petra Zubovic; Calvin Stephen; John Byrne; Patrick Morrissey; Mary Kelly-Quinn; Aonghus Mcnabola, An Archimedes Screw Based Barrier Modification System: Synergistic Approach to Nature Restoration and Renewable Energy Generation, Proceedings of the 41st IAHR World Congress, Singapore, 22 - 27 June, 2025
Tabbussum R., Basu B., Morrissey P. J., Gill L.W., Enhancing flood predictions: a comprehensive neural network approach for groundwater flooding in lowland karst areas, Environmental Modelling and Software, 192, 2025, p106591
Chowdhury N., Morrissey P., Gill L.W., A comparison between numerical, neural network, and hybrid modelling approaches to simulate spring flow from a karst catchment in northwest Ireland using long-term hydrological data, Journal of Hydrology Regional Studies, 61, 2025, p102723
Stephen Calvin, Huxley Brian, Byrne John A., Morrissey Patrick, Kelly-Quinn Mary, McNabola Aonghus, Integrating Fish-Friendly Hydropower Solutions with the Nature Restoration Policy Through River Barrier Modification, Energies, 18, (22), 2025
Dalton, Catherine, DeEyto, Elvira, Jennings, Eleanor, Lakes in Ireland: Mirrors of Change, 2024
Morrissey P., Naughton O., McCormack T., Johnston P.M., Gill L.W., A methodology for groundwater flood frequency analysis within karst aquifers, World Groundwater Congress IAH2024, Davos, Switzerland, 8th -13th September, 2024
Savatier M., Morrissey P., Gill L.W., Rocha C., Intercomparison of marine tracer and catchment-based submarine groundwater discharge estimates for a karst aquifer, Journal of Hydrology, 627, 2023, p130358-
Gill L.W., Mac Mahon J., Knappe J., Morrissey P., Hydraulic conductivity assessment of falling head percolation tests used for the design of on-site wastewater treatment systems, Water Research, 236, (119968), 2023
Basu B., Morrissey P., Gill L.W., Application of nonlinear time series and machine learning algorithms for forecasting groundwater flooding in a lowland karst area, Water Resources Research, 58, 2022, pe2021WR029576
Morrissey P., Nolan P., McCormack T., Johnston P.M., Naughton O., Gill L.W., Impacts of climate change on groundwater flooding and ecohydrology in lowland karst, Hydrology and Earth System Sciences , 25, 2021, p1923 - 1941
Gill L.W. Mac Mahon J., Knappe J., Morrissey P., An investigation into the validity of using falling head percolation tests as part of a field assessment procedure for the design of on-site wastewater treatment systems, EGU General Assembly 2021 , online, 19th-13th April 2021, EGU21-12355, 2021
Gill L.W., Schuler, P., Duran, L., Johnston P.M., Morrissey P., An evaluation of semi-distributed-pipe-network and distributed-finite-difference models to simulate karst systems, Hydrogeology Journal, 27, 2021, p259 - 279
Bhatnagar S., Gill L.W., Waldren S., Sharkey N., Naughton O., Johnston P., Coxon C., Morrissey P., Ghosh B., Ecohydrological metrics for vegetation communities in turloughs (ephemeral karstic wetlands), Ecohydrology, 14, 2021, pe2316
Morrissey P., McCormack T., Naughton O., Johnston P.M., Gill L.W., Modelling groundwater flooding in a lowland karst catchment, Journal of Hydrology, 580, 2020, p124361
McCormack T., Naughton O., Bradford R., Campanyà J., Morrissey P., Gill L., Lee M., GWFlood Project: Monitoring, Modelling and Mapping Karst Groundwater Flooding in Ireland, Dublin, Ireland, Geological Survey Ireland, 2020, p1 - 108
Gill L.W., Knappe J., Morrissey P., A comparison of falling head vs constant head percolation tests using field results and numerical modeling to determine the hydraulic conductivity of soils, Geophysical Research Abstracts, EGU General Assembly, Vienna, Austria, 7th-12th April, 21, 2019
Morrissey P., Gill L., McCormack T., Naughton O. , Modelling engineering solutions to groundwater flooding in a lowland karst catchment, Geophysical Research Abstracts, EGU General Assembly, Vienna, Austria, 7th-12th April, 21, 2019
Weldon, P., Morrissey, P.& O'Mahony, M., Micro-Analysis of the Fueling Costs of Electric Vehicles in Consideration of the Range of Options Available to Electric Vehicle Users, Annual Meeting of the Transportation Research Board, Washington D.C., Jan, 2019, pp12
Gill L.W., Morrissey P., McCormack T., Naughton O., Johnston P., Groundwater flooding - assessment of different engineered flood relief schemes using a semi-distributed model of a lowland karst system, 46th International Association of Hydrogeologists (IAH) International Congress, Malaga, Spain, 22nd-27th September , 2019
Weldon, P., Morrissey, P. and O'Mahony, M., Long-Term Cost of Ownership Comparative Analysis between Electric Vehicles and Internal Combustion Engine Vehicles, Sustainable Cities and Society, 39, 2018, p578 - 591
Morrissey P., Gill L.W., A two dimensional terrain and pipe network model of a lowland karst catchment in the west of Ireland, Eurokarst 2018, Besancon, France, 2nd - 6th July, 2018, pp1
Patrick Morrissey, The hydrogeology of the Gort Lowlands, Irish Journal of Earth Sciences, 36, 2018, p1
McCormack T., Naughton O., Bradford R., Morrissey P., Gill L., Hickey C., Monitoring and mapping groundwater flooding in Ireland, 44th International Association of Hydrogeologists (IAH) International Congress, Dubrovnik, Croatia, 25th-29th September, 2017
Morrissey P.J., Gill L.W., Integrating Hydrus and Modflow to predict on-site wastewater treatment contaminant transport in different aquifers, 44th International Association of Hydrogeologists (IAH) International Congress, Dubrovnik, Croatia, 25th-29th September, 2017
Naughton O., McCormack T., Bradford R., McAteer J., Morrissey P., Gill L., Hickey C, Lee M., GWFlood: Monitoring, modelling and mapping groundwater flood hazards in Ireland, Geotechnical Society of Ireland Conference 2017 "Geotechnical Engineering for Ground and Surface Water", Portlaoise, Ireland, 15th November, 2017
Morrissey, P., Weldon, P. and O'Mahony, M., The strategic rollout of fast electric vehicle charging networks with user charging behaviour data analysis, Transportation Research Record, 2572, 2016, p9 - 19
Morrissey, P., Weldon, P. and O'Mahony, M., Future standard and fast charging infrastructure planning: An analysis of electric vehicle charging behaviour, Energy Policy, 89, 2016, p257 - 270
Morrissey, P, Weldon, P. and O'Mahony, M., Informing the Strategic Rollout of Fast Electric Vehicle Charging Networks with User Charging Behaviour Data Analysis , Procs of the 95th Annual Meeting of the Transportation Research Board, National Academy of Sciences, Washington D.C., January, 2016
Weldon, P. Morrissey, P., and O'Mahony, M., Environmental impacts of varying electric vehicle user behaviours and comparisons to internal combustion engine vehicle usage - An Irish case study, Journal of Power Sources, 319, 2016, p27-38
Weldon, P., Morrissey, P., Brady, J., and O'Mahony, M., An investigation into usage patterns of electric vehicles in Ireland, Transportation Research Part D: Transport and the Environment, 43, 2016, p207 - 225
Morrissey, P., Weldon, P. and O'Mahony, M., Electric Vehicle Household Charging Behaviour in Ireland and Aims for a Carbon Neutral Electric Fleet by 2020, World Review of Intermodal Transportation Research, 5, (4), 2015, p336 - 352
Morrissey P., Johnston P.M., Gill L.W., The impact of on-site wastewater from high density cluster developments on groundwater quality, Journal of Contaminant Hydrology, 182, 2015, p36 - 50
Gill L.W., Morrissey P., Johnston P.M., The impact of wastewater from rural unsewered cluster developments on groundwater quality, 42nd International Association of Hydrogeologists Congress, Rome, Italy, 13th-18th September, 2015, pp1 - 1
Patrick Morrissey, An investigation into the effects of the density of on-site wastewater treatment systems on Irish aquifer, Trinity College Dublin, 2014
Gill L.W., Morrissey P., Johnston P.M., The dispersion of domestic on-site wastewater effluent by groundwater downstream of cluster developments, Dooge-Nash International Symposium, Dublin Castle, Dublin, 24th- 25th April, 2014, pp131 - 142
Morrissey P.J., Gill L.W., Johnston P.M., The impact of on-site wastewater treatment for small community developments on groundwater quality, SmallWat11 3rd International Congress Wastewater in Small Communities, Seville, Spain, 25th - 28th April, 2011, pp17 - 24
Non-Peer-Reviewed Publications
Patrick Morrissey, Urban Geoheat: Harnessing Geothermal Energy Beneath Dublin, GSI/iCRAG Geothermal Workshop, Dublin, Ireland, 23rd October, 2025
Baumann, A., Morrissey, P., AgEvaluate " Integrating NbS Monitoring with Microprofiling and LiDAR for Policy-Ready Insights, Trinity School of Engineering Research & Innovation Showcase, Dublin, Ireland, 27-28 May, 2025
Shendurnikar, S., Ali, M., Morrissey, PJ., The effects of Nature-based Solutions on Greenhouse Gas Emissions and Microbial Ecology, Trinity School of Engineering Research & Innovation Showcase, Dublin, Ireland, 27-28 May, 2025
Morrissey, PJ.,, Groundwater & NBS: Water 4All, Proceedings of the 44th Annual Groundwater Conference, Tullamore, Ireland, 16 - 17th April, 2024
Patrick Morrissey , Robbie Meehan and Timothy Meadows, 'Sediment studies in the Boycetown Catchment, Trim " Kiltale, County Meath', THE HYDROGEOLOGY OF EAST CENTRAL IRELAND Field Guide, Dublin, Ireland, 2022, -
McCormack T., Naughton O., Campanya J., Morrissey P., Gill L., New groundwater flood maps for Ireland, GSI Groundwater Newsletter, 59, 2021, p35 - 38
Patrick Morrissey, Natural Water Retention Measures (NWRM) Overview and Recommendations for Use in Ireland, EPA, 2021
Morrissey P., Gill L.W., McCormack T., Naughton O., Johnston P.,, Gort Lowlands Groundwater Flood Modelling final project report, 2021
Morrissey, PJ., 'Groundwater Flooding in the Gort Lowland Karst', KARST HYDROGEOLOGY OF THE BURREN UPLANDS / GORT LOWLANDS: Field Guide, Dublin, Ireland, IAH Ireland, 2019, -
Morrissey P., Gill L.W., McCormack T., Naughton O., Modelling groundwater flooding. A unqiue challenge requirng a novel solution: a case study of south Galway, Proceedings of the 38th Annual Groudnwater Conference, IAH Irish Group, Tullamore, Ireland, 24th-25th April, II, 2018, pp9 - 16
Morrissey P., Johnston P., Gill L.W., Groundwater flood modelling in the karst lowlands of South Galway, National Hydrology Conference, Mullingar, Ireland, 20th November , 2018
Morrissey, PJ., 'Groundwater Research in Toonagh', INTERNATIONAL ASSOCIATION OF HYDROGEOLOGISTS (IRISH BRANCH) 2012 ANNUAL FIELD TRIP, Dublin, Ireland, 2012, -
Morrissey P.J., Gill L.W., Johnston P.M., The impact of on-site wastewater treatment for small community developments on groundwater quality., International Symposium on Domestic Waste Water Treatment and Disposal Systems, Trinity College, Dublin, 10th-11th September, edited by L.W. Gill , 2012
Morrissey P.J., Gill L.W., Johnston P.M. , The impact of on-site wastewater treatment for small community developments on groundwater quality , 8th Annual EPA postgraduate seminar, National Convention Centre, Dublin, 11th November 2010, 2011
Recognition
Representations
Member of the Irish RAMSAR Wetlands Committee (IRWC). The IRWC is a group set up to assist in the protection, appreciation and understanding of wetlands in Ireland and to promote the implementation of the RAMSAR convention. The primary objective of the IRWC is to promote the wise use and protection of all wetlands in Ireland.
Memberships
Member of the International Association of Hydrogeologists
Chartered Engineer with Engineers Ireland