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

Ebru Kirezci, Ian Young (), Roshanka Ranasinghe, Yiqun Chen, Yibo Zhang and Abbas Rajabifard
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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
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

Data, 2025, vol. 10, issue 2, 1-13

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.

Keywords: extreme sea levels; coastal flooding; sea level rise (search for similar items in EconPapers)
JEL-codes: C8 C80 C81 C82 C83 (search for similar items in EconPapers)
Date: 2025
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