Articles | Volume 30, issue 5
https://doi.org/10.5194/hess-30-1397-2026
https://doi.org/10.5194/hess-30-1397-2026
Research article
 | 
17 Mar 2026
Research article |  | 17 Mar 2026

Towards a typology for hybrid compound flood modeling

Soheil Radfar, Hamed Moftakhari, David F. Muñoz, Avantika Gori, Ferdinand Diermanse, Ning Lin, and Amir AghaKouchak

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Cited articles

Abbaszadeh, P., Munoz, D. F., Moftakhari, H., Jafarzadegan, K., and Moradkhani, H.: Perspective on uncertainty quantification and reduction in compound flood modeling and forecasting, Iscience, 25, https://doi.org/10.1016/j.isci.2022.105201, 2022. 
AghaKouchak, A., Chiang, F., Huning, L. S., Love, C. A., Mallakpour, I., Mazdiyasni, O., Moftakhari, H., Papalexiou, S. M., Ragno, E., and Sadegh, M.: Climate extremes and compound hazards in a warming world, Annu. Rev. Earth Pl. Sci., 48, 519–548, 2020. 
Anderson, D. L., Ruggiero, P., Mendez, F. J., Barnard, P. L., Erikson, L. H., O'Neill, A. C., Merrifield, M., Rueda, A., Cagigal, L., and Marra, J.: Projecting Climate Dependent Coastal Flood Risk With a Hybrid Statistical Dynamical Model, Earth's Future, 9, e2021EF002285, https://doi.org/10.1029/2021EF002285, 2021. 
Bass, B. and Bedient, P.: Surrogate modeling of joint flood risk across coastal watersheds, J. Hydrol., 558, 159–173, https://doi.org/10.1016/j.jhydrol.2018.01.014, 2018. 
Bevacqua, E., De Michele, C., Manning, C., Couasnon, A., Ribeiro, A. F., Ramos, A. M., Vignotto, E., Bastos, A., Blesić, S., and Durante, F.: Guidelines for studying diverse types of compound weather and climate events, Earth's Future, 9, e2021EF002340, https://doi.org/10.1029/2021EF002340, 2021. 
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Short summary
Flooding in coastal areas often occurs when several mechanisms act together, causing compound flooding. Researchers increasingly use hybrid models that combine numerical models with statistical tools to study these events. Yet, the term “hybrid model” has been used inconsistently. This paper provides a clear definition and classification system, along with examples and technical challenges.
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