Articles | Volume 21, issue 9
Nat. Hazards Earth Syst. Sci., 21, 2829–2847, 2021
https://doi.org/10.5194/nhess-21-2829-2021
Nat. Hazards Earth Syst. Sci., 21, 2829–2847, 2021
https://doi.org/10.5194/nhess-21-2829-2021

Research article 16 Sep 2021

Research article | 16 Sep 2021

Global flood exposure from different sized rivers

Mark V. Bernhofen et al.

Data sets

River Flood Susceptibility Map M. V. Bernhofen, M. A. Trigg, P. A. Sleigh, C. C. Sampson, and A. M. Smith https://doi.org/10.5518/947

Facebook Density Humanitarian Data Exchange https://data.humdata.org/organization/facebook?q=density

GHS-POP R2019A - GHS population grid multitemporal (1975-1990-2000-2015) M. Schiavina, S. Freire, and K. MacManus https://doi.org/10.2905/0C6B9751-A71F-4062-830B-43C9F432370F

Population Counts Worldpop https://doi.org/10.5258/SOTON/WP00645

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Short summary
The use of different global datasets to calculate flood exposure can lead to differences in global flood exposure estimates. In this study, we use three global population datasets and a simple measure of a river’s flood susceptibility (based on the terrain alone) to explore how the choice of population data and the size of river represented in global flood models affect global and national flood exposure estimates.
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