Effect of sea level extremes on the western Basque coast during the 21st century

Rising global sea level increases the vulnerability of coastal regions to storm surge flooding. The impact of extreme high waters resulting from the combination of tidal oscillations and changes in mean sea level and in storm surges during the 21st century has been explored in the Bizkaian coast (no...

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Detalles Bibliográficos
Autores: Marcos, Marta, Chust, Guillem, Jordá, Gabriel, Caballero, Ainhoa
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/49566
Acceso en línea:http://hdl.handle.net/10261/49566
Access Level:acceso abierto
Palabra clave:Sea level
Extremes
Climate change
Storm surges
LiDAR
Coastal impacts
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spelling Effect of sea level extremes on the western Basque coast during the 21st centuryMarcos, MartaChust, GuillemJordá, GabrielCaballero, AinhoaSea levelExtremesClimate changeStorm surgesLiDARCoastal impactsRising global sea level increases the vulnerability of coastal regions to storm surge flooding. The impact of extreme high waters resulting from the combination of tidal oscillations and changes in mean sea level and in storm surges during the 21st century has been explored in the Bizkaian coast (northern Spain). Mean sea level variations due to temperature changes were estimated from an ensemble mean of global atmosphere-ocean general circulation models in the Bay of Biscay under A1B and A2 climate change scenarios. Changes in the frequency and intensity of storm surges were obtained from the output of a barotropic regional ocean model forced by greenhouse gas concentrations during 2000−2100. The storm surge model was calibrated using available tide gauge observations. Based on the above estimations, return levels of total sea level extremes are expected to increase by up to 40 cm with respect to present-day values. The likely impacts of resulting floods on coastal and estuarine habitats of the Bizkaian coast were assessed applying the return levels to a high precision light detection and ranging (LiDAR) based Digital Terrain Model. Results show that during the second half of the 21st century up to 202 ha are under risk of flooding, of which 50% correspond to urbanized land including industrial and residential areas. This represents a more than 3-fold increase compared to the area at risk from present sea level extremes. This study provides insight into both regional sea level variability and local floodrisks, and thus provides inputs for the formulation of effective mid-term adaptation measures to sea level extremes.This project has been supported by the Department of Environment and Regional Planning and by the Industry, Trade and Tourism Department of the Basque Government (K-Egokitzen II project, Etortek Funding Program) and the projects VANIMEDAT-2 (CTM2009-10163- C02-01, funded by the Spanish Marine Science and Technology Program and the E-Plan of the Spanish Government) and ESCENARIOS (funded by the Agencia Estatal de METeorología). G.J. acknowledges a ‘JAE-DOC’ contract funded by the Spanish Research Council (CSIC). M.M. acknowledges a ‘Ramon y Cajal’ contract funded by the Spanish Ministry of Science. The authors acknowledge the contribution of R. Moncho for valuable technical support with LiDAR data processing.Peer reviewedInter Research201220122012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/49566reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.3354/cr01069info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/495662026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of sea level extremes on the western Basque coast during the 21st century
title Effect of sea level extremes on the western Basque coast during the 21st century
spellingShingle Effect of sea level extremes on the western Basque coast during the 21st century
Marcos, Marta
Sea level
Extremes
Climate change
Storm surges
LiDAR
Coastal impacts
title_short Effect of sea level extremes on the western Basque coast during the 21st century
title_full Effect of sea level extremes on the western Basque coast during the 21st century
title_fullStr Effect of sea level extremes on the western Basque coast during the 21st century
title_full_unstemmed Effect of sea level extremes on the western Basque coast during the 21st century
title_sort Effect of sea level extremes on the western Basque coast during the 21st century
dc.creator.none.fl_str_mv Marcos, Marta
Chust, Guillem
Jordá, Gabriel
Caballero, Ainhoa
author Marcos, Marta
author_facet Marcos, Marta
Chust, Guillem
Jordá, Gabriel
Caballero, Ainhoa
author_role author
author2 Chust, Guillem
Jordá, Gabriel
Caballero, Ainhoa
author2_role author
author
author
dc.subject.none.fl_str_mv Sea level
Extremes
Climate change
Storm surges
LiDAR
Coastal impacts
topic Sea level
Extremes
Climate change
Storm surges
LiDAR
Coastal impacts
description Rising global sea level increases the vulnerability of coastal regions to storm surge flooding. The impact of extreme high waters resulting from the combination of tidal oscillations and changes in mean sea level and in storm surges during the 21st century has been explored in the Bizkaian coast (northern Spain). Mean sea level variations due to temperature changes were estimated from an ensemble mean of global atmosphere-ocean general circulation models in the Bay of Biscay under A1B and A2 climate change scenarios. Changes in the frequency and intensity of storm surges were obtained from the output of a barotropic regional ocean model forced by greenhouse gas concentrations during 2000−2100. The storm surge model was calibrated using available tide gauge observations. Based on the above estimations, return levels of total sea level extremes are expected to increase by up to 40 cm with respect to present-day values. The likely impacts of resulting floods on coastal and estuarine habitats of the Bizkaian coast were assessed applying the return levels to a high precision light detection and ranging (LiDAR) based Digital Terrain Model. Results show that during the second half of the 21st century up to 202 ha are under risk of flooding, of which 50% correspond to urbanized land including industrial and residential areas. This represents a more than 3-fold increase compared to the area at risk from present sea level extremes. This study provides insight into both regional sea level variability and local floodrisks, and thus provides inputs for the formulation of effective mid-term adaptation measures to sea level extremes.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/49566
url http://hdl.handle.net/10261/49566
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.3354/cr01069
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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