Measuring compound flood potential from river discharge and storm surge extremes at the global scale

Couasnon, Anaïs; Eilander, Dirk; Muis, Sanne; Veldkamp, Ted I. E.; Haigh, Ivan D.; Wahl, Thomas; Winsemius, Hessel C.; Ward, Philip J.

doi:https://doi.org/10.5194/nhess-20-489-2020

Articles | Volume 20, issue 2

https://doi.org/10.5194/nhess-20-489-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Global- and continental-scale risk assessment for natural...

https://doi.org/10.5194/nhess-20-489-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 2

Research article

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|

21 Feb 2020

Research article | Highlight paper |

| 21 Feb 2020

Measuring compound flood potential from river discharge and storm surge extremes at the global scale

Anaïs Couasnon, Dirk Eilander, Sanne Muis, Ted I. E. Veldkamp, Ivan D. Haigh, Thomas Wahl, Hessel C. Winsemius, and Philip J. Ward

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Final revised paper (published on 21 Feb 2020)
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Preprint (discussion started on 19 Jul 2019)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of Couasnon et al', Anonymous Referee #1, 07 Aug 2019
- AC1: 'Response to reviewer', Anais Couasnon, 25 Oct 2019
RC2: 'Review of "Measuring compound flood potential from river discharge and storm surge extremes at the global scale and its implications for flood hazard"', Anonymous Referee #2, 13 Aug 2019
- AC2: 'Reply to referee', Anais Couasnon, 25 Oct 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish as is (16 Nov 2019) by James Daniell

AR by Anais Couasnon on behalf of the Authors (26 Nov 2019) Author's response Manuscript

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Short summary

When a high river discharge coincides with a high storm surge level, this can exarcebate flood level, depth, and duration, resulting in a so-called compound flood event. These events are not currently included in global flood models. In this research, we analyse the timing and correlation between modelled discharge and storm surge level time series in deltas and estuaries. Our results provide a first indication of regions along the global coastline with a high compound flooding potential.