Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean
The NW Mediterranean coast is highly susceptible to the impacts of extreme rainstorms and coastal storms, which often lead to flash floods, coastal erosion, and flooding across a highly urbanised territory. Often, these storms occur simultaneously, resulting in compound events that intensify local i...
Published in: | Hydrology and Earth System Sciences |
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European Geosciences Union (EGU)
2024
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Online Access: | http://hdl.handle.net/2117/407189 https://doi.org/10.5194/hess-28-283-2024 |
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ftupcatalunyair:oai:upcommons.upc.edu:2117/407189 2024-09-15T18:24:13+00:00 Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean Sanuy Vázquez, Marc Peña Rabadán, Juan Carlos Assimenidis Mateu, Sotiris Jiménez Quintana, José Antonio Universitat Politècnica de Catalunya. Laboratori d'Enginyeria Marítima Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental Universitat Politècnica de Catalunya. LIM/UPC - Laboratori d'Enginyeria Marítima 2024-01 20 p. application/pdf http://hdl.handle.net/2117/407189 https://doi.org/10.5194/hess-28-283-2024 eng eng European Geosciences Union (EGU) https://hess.copernicus.org/articles/28/283/2024/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113638RB-C21/ES/RIESGOS NATURALES COMPUESTOS Y CONECTADOS EN LA COSTA MEDITERRANEA ESPAÑOLA ANTE EL CAMBIO CLIMATICO - MAR/ Sanuy, M. [et al.]. Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean. "Hydrology and earth system sciences", 2024, vol. 28, núm. 1, p. 283-302. 1607-7938 http://hdl.handle.net/2117/407189 doi:10.5194/hess-28-283-2024 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ Open Access Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica marítima i sanitària::Ports i costes Storms -- Mediterranean Region Tempestes -- Catalunya Costes -- Catalunya Article 2024 ftupcatalunyair https://doi.org/10.5194/hess-28-283-2024 2024-07-25T11:00:22Z The NW Mediterranean coast is highly susceptible to the impacts of extreme rainstorms and coastal storms, which often lead to flash floods, coastal erosion, and flooding across a highly urbanised territory. Often, these storms occur simultaneously, resulting in compound events that intensify local impacts when they happen in the same location or spread impacts across the territory when they occur in different areas. These multivariate and spatially compound events present significant challenges for risk management, potentially overwhelming emergency services. In this study, we analysed the prevailing atmospheric conditions during various types of extreme episodes, aiming to create the first classification of synoptic weather patterns (SWPs) conducive to compound events involving heavy rainfall and storm waves in the Spanish NW Mediterranean. To achieve this, we developed a methodological framework that combines an objective synoptic classification method based on principal component analysis and k-means clustering with a Bayesian network. This methodology was applied to a dataset comprising 562 storm events recorded over 30 years, including 112 compound events. First, we used the framework to determine the optimal combination of domain size, classification variables, and number of clusters based on the synoptic skill to replicate local-scale values of daily rainfall and significant wave height. Subsequently, we identified SWPs associated with extreme compound events, which are often characterised by upper-level lows and trough structures in conjunction with Mediterranean cyclones, resulting in severe to extreme coastal storms combined with convective systems. The obtained classification demonstrated strong skill, with scores exceeding 0.4 when considering factors like seasonality or the North Atlantic Oscillation. These findings contribute to a broader understanding of compound terrestrial–maritime extreme events in the study area and have the potential to aid in the development of effective risk management ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge Hydrology and Earth System Sciences 28 1 283 302 |
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Open Polar |
collection |
Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
op_collection_id |
ftupcatalunyair |
language |
English |
topic |
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica marítima i sanitària::Ports i costes Storms -- Mediterranean Region Tempestes -- Catalunya Costes -- Catalunya |
spellingShingle |
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica marítima i sanitària::Ports i costes Storms -- Mediterranean Region Tempestes -- Catalunya Costes -- Catalunya Sanuy Vázquez, Marc Peña Rabadán, Juan Carlos Assimenidis Mateu, Sotiris Jiménez Quintana, José Antonio Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean |
topic_facet |
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica marítima i sanitària::Ports i costes Storms -- Mediterranean Region Tempestes -- Catalunya Costes -- Catalunya |
description |
The NW Mediterranean coast is highly susceptible to the impacts of extreme rainstorms and coastal storms, which often lead to flash floods, coastal erosion, and flooding across a highly urbanised territory. Often, these storms occur simultaneously, resulting in compound events that intensify local impacts when they happen in the same location or spread impacts across the territory when they occur in different areas. These multivariate and spatially compound events present significant challenges for risk management, potentially overwhelming emergency services. In this study, we analysed the prevailing atmospheric conditions during various types of extreme episodes, aiming to create the first classification of synoptic weather patterns (SWPs) conducive to compound events involving heavy rainfall and storm waves in the Spanish NW Mediterranean. To achieve this, we developed a methodological framework that combines an objective synoptic classification method based on principal component analysis and k-means clustering with a Bayesian network. This methodology was applied to a dataset comprising 562 storm events recorded over 30 years, including 112 compound events. First, we used the framework to determine the optimal combination of domain size, classification variables, and number of clusters based on the synoptic skill to replicate local-scale values of daily rainfall and significant wave height. Subsequently, we identified SWPs associated with extreme compound events, which are often characterised by upper-level lows and trough structures in conjunction with Mediterranean cyclones, resulting in severe to extreme coastal storms combined with convective systems. The obtained classification demonstrated strong skill, with scores exceeding 0.4 when considering factors like seasonality or the North Atlantic Oscillation. These findings contribute to a broader understanding of compound terrestrial–maritime extreme events in the study area and have the potential to aid in the development of effective risk management ... |
author2 |
Universitat Politècnica de Catalunya. Laboratori d'Enginyeria Marítima Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental Universitat Politècnica de Catalunya. LIM/UPC - Laboratori d'Enginyeria Marítima |
format |
Article in Journal/Newspaper |
author |
Sanuy Vázquez, Marc Peña Rabadán, Juan Carlos Assimenidis Mateu, Sotiris Jiménez Quintana, José Antonio |
author_facet |
Sanuy Vázquez, Marc Peña Rabadán, Juan Carlos Assimenidis Mateu, Sotiris Jiménez Quintana, José Antonio |
author_sort |
Sanuy Vázquez, Marc |
title |
Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean |
title_short |
Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean |
title_full |
Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean |
title_fullStr |
Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean |
title_full_unstemmed |
Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean |
title_sort |
synoptic weather patterns conducive to compound extreme rainfall–wave events in the nw mediterranean |
publisher |
European Geosciences Union (EGU) |
publishDate |
2024 |
url |
http://hdl.handle.net/2117/407189 https://doi.org/10.5194/hess-28-283-2024 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://hess.copernicus.org/articles/28/283/2024/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113638RB-C21/ES/RIESGOS NATURALES COMPUESTOS Y CONECTADOS EN LA COSTA MEDITERRANEA ESPAÑOLA ANTE EL CAMBIO CLIMATICO - MAR/ Sanuy, M. [et al.]. Synoptic weather patterns conducive to compound extreme rainfall–wave events in the NW Mediterranean. "Hydrology and earth system sciences", 2024, vol. 28, núm. 1, p. 283-302. 1607-7938 http://hdl.handle.net/2117/407189 doi:10.5194/hess-28-283-2024 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ Open Access |
op_doi |
https://doi.org/10.5194/hess-28-283-2024 |
container_title |
Hydrology and Earth System Sciences |
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28 |
container_issue |
1 |
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283 |
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1810464537380388864 |