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Global Dataset of Extreme Sea Levels and Coastal Flood Impacts over the 21st Century

Author

Listed:
  • Ebru Kirezci

    (Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC 3010, Australia)

  • Ian Young

    (Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC 3010, Australia)

  • Roshanka Ranasinghe

    (Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC 3010, Australia
    Department of Coastal and Urban Risk & Resilience, IHE Delft Institute for Water Education, P.O. Box 3015, 2601 DA Delft, The Netherlands
    Resilient Ports and Coasts, Deltares, P.O. Box 177, 2600 MH Delft, The Netherlands)

  • Yiqun Chen

    (Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC 3010, Australia)

  • Yibo Zhang

    (Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC 3010, Australia)

  • Abbas Rajabifard

    (Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC 3010, Australia)

Abstract

A global database of coastal flooding impacts resulting from extreme sea levels is developed for the present day and for the years 2050 and 2100. The database consists of three sub-datasets: the extreme sea levels, the coastal areas flooded by these extreme sea levels, and the resulting socioeconomic implications. The extreme sea levels consider the processes of storm surge, tide levels, breaking wave setup and relative sea level rise. The socioeconomic implications are expressed in terms of Expected Annual Population Affected (EAPA) and Expected Annual Damage (EAD), and presented at the global, regional and national scales. The EAPA and EAD are determined both for existing coastal defence levels and assuming two plausible adaptation scenarios, along with socioeconomic development narratives. All the sub-datasets can be visualized with a Digital Twin platform based on a GIS-based mapping host. This publicly available database provides a first-pass assessment, enabling users to extract and identify global and national coastal hotspots under different projections of sea level rise and socioeconomic developments.

Suggested Citation

  • Ebru Kirezci & Ian Young & Roshanka Ranasinghe & Yiqun Chen & Yibo Zhang & Abbas Rajabifard, 2025. "Global Dataset of Extreme Sea Levels and Coastal Flood Impacts over the 21st Century," Data, MDPI, vol. 10(2), pages 1-13, January.
    • Handle: RePEc:gam:jdataj:v:10:y:2025:i:2:p:15-:d:1579160
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    References listed on IDEAS

    as
    1. Rafael Almar & Roshanka Ranasinghe & Erwin W. J. Bergsma & Harold Diaz & Angelique Melet & Fabrice Papa & Michalis Vousdoukas & Panagiotis Athanasiou & Olusegun Dada & Luis Pedro Almeida & Elodie Kest, 2021. "A global analysis of extreme coastal water levels with implications for potential coastal overtopping," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    2. Claudia Tebaldi & Roshanka Ranasinghe & Michalis Vousdoukas & D. J. Rasmussen & Ben Vega-Westhoff & Ebru Kirezci & Robert E. Kopp & Ryan Sriver & Lorenzo Mentaschi, 2021. "Extreme sea levels at different global warming levels," Nature Climate Change, Nature, vol. 11(9), pages 746-751, September.
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