Articles | Volume 25, issue 7
https://doi.org/10.5194/nhess-25-2287-2025
https://doi.org/10.5194/nhess-25-2287-2025
Research article
 | 
11 Jul 2025
Research article |  | 11 Jul 2025

A multiscale modelling framework of coastal flooding events for global to local flood hazard assessments

Irene Benito, Jeroen C. J. H. Aerts, Philip J. Ward, Dirk Eilander, and Sanne Muis

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Cited articles

Alfieri, L., Bisselink, B., Dottori, F., Naumann, G., de Roo, A., Salamon, P., Wyser, K., and Feyen, L.: Global projections of river flood risk in a warmer world, Earths Future, 5, 171–182, https://doi.org/10.1002/2016EF000485, 2017. 
Andersen, O. B. and Knudsen, P.: DNSC08 mean sea surface and mean dynamic topography models, J. Geophys. Res.-Oceans, 114, https://doi.org/10.1029/2008JC005179, 2009. 
Barnard, P. L., Van Ormondt, M., Erikson, L. H., Eshleman, J., Hapke, C., Ruggiero, P., Adams, P. N., and Foxgrover, A. C.: Development of the Coastal Storm Modeling System (CoSMoS) for predicting the impact of storms on high-energy, active-margin coasts, Nat. Hazards, 74, 1095–1125, https://doi.org/10.1007/s11069-014-1236-y, 2014. 
Barnard, P. L., Erikson, L. H., Foxgrover, A. C., Hart, J. A. F., Limber, P., O'Neill, A. C., van Ormondt, M., Vitousek, S., Wood, N., Hayden, M. K., and Jones, J. M.: Dynamic flood modeling essential to assess the coastal impacts of climate change, Sci. Rep., 9, 4309, https://doi.org/10.1038/s41598-019-40742-z, 2019. 
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Short summary
Global flood models are key to the mitigation of coastal flooding impacts, yet they still have limitations when providing actionable insights locally. We present a multiscale framework that couples dynamic water level and flood models and bridges the fully global and local modelling approaches. We apply it to three historical storms. Our findings reveal that the importance of model refinements varies based on the study area characteristics and the storm’s nature.
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