Articles | Volume 19, issue 5
https://doi.org/10.5194/nhess-19-973-2019
https://doi.org/10.5194/nhess-19-973-2019
Research article
 | 
03 May 2019
Research article |  | 03 May 2019

Water-level attenuation in global-scale assessments of exposure to coastal flooding: a sensitivity analysis

Athanasios T. Vafeidis, Mark Schuerch, Claudia Wolff, Tom Spencer, Jan L. Merkens, Jochen Hinkel, Daniel Lincke, Sally Brown, and Robert J. Nicholls

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Cited articles

Arkema, K. K., Guannel, G., Verutes, G., Wood, S. A., Guerry, A., Ruckelshaus, M., Kareiva, P., Lacayo, M., and Silver, J. M.: Coastal habitats shield people and property from sea-level rise and storms, Nat. Clim. Change, 3, 913–918, https://doi.org/10.1038/nclimate1944, 2013. 
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Barbier, E. B., Georgiou, I. Y., Enchelmeyer, B., and Reed, D. J.: The Value of Wetlands in Protecting Southeast Louisiana from Hurricane Storm Surges, Plos One, 8, e58715, https://doi.org/10.1371/journal.pone.0058715, 2013. 
Bates, P. D., Horritt, M. S., and Fewtrell, T. J.: A simple inertial formulation of the shallow water equations for efficient two-dimensional flood inundation modelling, J. Hydrol., 387, 33–45, https://doi.org/10.1016/j.jhydrol.2010.03.027, 2010. 
Blumberg, A. F., Georgas, N., Yin, L., Herrington, T. O., and Orton, P. M.: Street-Scale Modeling of Storm Surge Inundation along the New Jersey Hudson River Waterfront, J. Atmos. Ocean. Tech., 32, 1486–1497, https://doi.org/10.1175/jtech-d-14-00213.1, 2015. 
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This paper evaluates the effect of surge water level reduction due to land surface characteristics when assessing flood impacts at global scales. Our results show that uncertainties due to not accounting for water attenuation are of similar magnitude to the uncertainties regarding the total amount of sea-level rise expected by 2100, thus highlighting the need for better understanding of the spatial and temporal variation of water levels across floodplains.
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