Abstract

ECLISEA is a project that aims to advance coastal climate science concerning sea surface dynamics over the European coasts and seas. Focused on (i) developing new data and climate information by supporting harmonized analysis at a consistent European scale, (ii) the research on climate variability, predictability and long-term projections, and (iii) the investigation of the complexity and uncertainties of impact models on the coastal region and shelf seas, ECLISEA proposes an integral research plan that starts with the review of stakeholders needs and available information and ends upon the development of a user-friendly and on-line open European prototype of a coastal climate service. Relevant issues that require further study, such as the characterization and change of extreme met-ocean conditions or the assessment of uncertainties of regional mean sea level rise from the historical and future perspectives are considered, as well as relatively unexplored research such as wind-waves and storm surge climate predictability from seasonal to decadal time scales. The research and advances proposed through the 3-year ECLISEA project are estimated to produce a set of recommendations and best practices about coastal climate and coastal impact aspects, a European data infrastructure with its atlas viewer, and several models, methods and tools that will be useful for a variety of stakeholder sectors.

ECLISEA is a project that aims to advance coastal climate science concerning sea surface dynamics over the European coasts and seas. Focused on (i) developing new data and climate information by supporting harmonized analysis at a consistent European scale, (ii) the research on climate variability, predictability and long-term projections, and (iii) the investigation of the complexity and uncertainties of impact models on the coastal region and shelf seas, ECLISEA proposes an integral research plan that starts with the review of stakeholders needs and available information and ends upon the development of a user-friendly and on-line open European prototype of a coastal climate service. Relevant issues that require further study, such as the characterization and change of extreme met-ocean conditions or the assessment of uncertainties of regional mean sea level rise from the historical and future perspectives are considered, as well as relatively unexplored research such as wind-waves and storm surge climate predictability from seasonal to decadal time scales. The research and advances proposed through the 3-year ECLISEA project are estimated to produce a set of recommendations and best practices about coastal climate and coastal impact aspects, a European data infrastructure with its atlas viewer, and several models, methods and tools that will be useful for a variety of stakeholder sectors.

ECLISEA is a project that aims to advance coastal climate science concerning sea surface dynamics over the European coasts and seas. Focused on (i) developing new data and climate information by supporting harmonized analysis at a consistent European scale, (ii) the research on climate variability, predictability and long-term projections, and (iii) the investigation of the complexity and uncertainties of impact models on the coastal region and shelf seas, ECLISEA proposes an integral research plan that starts with the review of stakeholders needs and available information and ends upon the development of a user-friendly and on-line open European prototype of a coastal climate service. Relevant issues that require further study, such as the characterization and change of extreme met-ocean conditions or the assessment of uncertainties of regional mean sea level rise from the historical and future perspectives are considered, as well as relatively unexplored research such as wind-waves and storm surge climate predictability from seasonal to decadal time scales. The research and advances proposed through the 3-year ECLISEA project are estimated to produce a set of recommendations and best practices about coastal climate and coastal impact aspects, a European data infrastructure with its atlas viewer, and several models, methods and tools that will be useful for a variety of stakeholder sectors.

Available data: sea-level rise and surge

Sea-level rise on 2 french areas: Aquitaine and Languedoc-Roussillon.
  • Available levels:
    • Computation based on MNT 25m : 0,50,100,200,300,400,500,600,700,800,900,1000 (cm)
    • Computation based on MNT 1m: 0,10,20,30,40,50,60,70,80,90,100,200,300,400,500,600,700,800,900,1000 (cm)
  • Available surges:
    • Computation based on MNT 25m: 0,50,100,150,200 (cm)
    • Computation based on MNT 1m : 0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190,200 (cm)
Visualization automatically switch from data computed on MNT 25m to MNT 1m at the scale 1/20000

Niveaux marins considérés

Les calculs ont été réalisés en considérant par défaut la plus haute marée astronomique (PHMA, pleine mer de coefficient 120), elle-même déterminée par une interpolation entre les ports où les caractéristiques de la marée sont connues (Références Altimétriques Maritimes du SHOM, édition 2016). A ce niveau de marée peut alors être ajouté par l’utilisateur une élévation du niveau de la mer sous l’effet du changement climatique (pouvant aller jusqu’à 10 m), ainsi qu’une valeur de surcote (pouvant aller jusqu’à 2 m). Il convient de noter qu’à grande échelle, la valeur de surcote choisie par l’utilisateur peut ne pas avoir de réalité physique (effets locaux pouvant générer une importante hétérogénéité spatiale de la surcote dans la réalité).

Topographie considérée

La topographie utilisée correspond aux données à très haute résolution acquises par LiDAR (laser aéroporté) sur les zones basses et côtières (RGE-ALTI©IGN). Ces données, qui correspondent à la partie terrestre du programme LITTO3D (réalisé conjointement par le SHOM et l’IGN) n’intègrent donc pas la bathymétrie. La réalisation de simulations hydrodynamiques, telles qu’elles sont réalisées par exemple pour la réalisation de PPRL, pour des études de caractérisation de l’aléa Submersion marine ou pour l’étude de la propagation des vagues, nécessiterait par contre la prise en compte de la bathymétrie et des effets hydrauliques induits.

Principe du calcul

A partir du niveau marin défini par l’utilisateur (pleine-mer de coefficient 120 + Elévation du niveau de la mer + Surcote), l'outils effectue une simple projection statique du niveau marin sur la topographie. La méthode est donc similaire à celle utilisée pour établir les cartes informatives basées sur la méthode de superposition topographie/niveau marin de référence dans le cadre des PPR Submersion marine. Dans l’analyse réalisée, les protections côtières (naturelles et artificielles) sont considérées comme transparentes à l’écoulement : ces zones, situées sous le niveau marin considéré, ne peuvent en effet pas être considérées comme à l’abri des submersions marines, suivant les processus considérés (franchissements par paquets de mer, défaillance des protections…).
Tellez-Arenas A. et al. (2018) Scalable Interactive Platform for Geographic Evaluation of Sea-Level Rise Impact Combining High-Performance Computing and WebGIS Client. In: Serrao-Neumann S., Coudrain A., Coulter L. (eds) Communicating Climate Change Information for Decision-Making. Springer Climate. Springer, Cham https://link.springer.com/chapter/10.1007/978-3-319-74669-2_12

Eurosion project

A European initiative for sustainable coastal erosion management. More information on the project portal.
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Bobwa-H Bay of Biscay Wave Atlas - Hindcast


More information on the project web site.
Data extraction (Thredds server): view the catalog page

Bobwa-F Bay of Biscay Wave Atlas - Forecast