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

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

doi:10.5194/nhess-19-973-2019

Articles | Volume 19, issue 5

https://doi.org/10.5194/nhess-19-973-2019

© Author(s) 2019. 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-19-973-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 5

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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Jan 2019	151	13	0	164
Feb 2019	103	7	2	112
Mar 2019	65	11	0	76
Apr 2019	51	10	1	62
May 2019	272	69	4	345
Jun 2019	169	40	2	211
Jul 2019	48	24	0	72
Aug 2019	32	19	0	51
Sep 2019	23	13	0	36
Oct 2019	27	11	1	39
Nov 2019	33	18	2	53
Dec 2019	30	15	0	45
Jan 2020	32	9	3	44
Feb 2020	28	11	2	41
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Dec 2021	23	10	1	34
Jan 2022	36	14	0	50
Feb 2022	12	9	1	22
Mar 2022	19	10	0	29
Apr 2022	30	13	2	45
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Dec 2022	31	14	3	48
Jan 2023	48	15	2	65
Feb 2023	55	11	1	67
Mar 2023	37	9	3	49
Apr 2023	31	14	4	49
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Jun 2023	37	7	1	45
Jul 2023	35	12	1	48
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Oct 2023	238	31	3	272
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Dec 2023	37	37	1	75
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Short summary

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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