Accessibility navigation


Brief communication: the role of using precipitation or river discharge data when assessing global coastal compound flooding

Bevacqua, E., Vousdoukas, M. I., Shepherd, T. G. and Vrac, M. (2020) Brief communication: the role of using precipitation or river discharge data when assessing global coastal compound flooding. Natural Hazards and Earth System Sciences (NHESS), 20. pp. 1765-1782. ISSN 1684-9981

[img]
Preview
Text (Open Access) - Published Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.

7MB
[img] Text - Accepted Version
· Restricted to Repository staff only

25MB

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.5194/nhess-20-1765-2020

Abstract/Summary

Interacting storm surges and high water-runoff can cause compound flooding (CF) in low-lying coasts and river estuaries. The large-scale CF hazard has been typically studied using proxies such as the concurrence of storm surge extremes either with precipitation or with river discharge extremes. Here the impact of the choice of such proxies is addressed employing state-of-the-art global datasets. Although being proxies of diverse physical mechanisms, we find that the two approaches show similar CF spatial patterns. However, deviations increase with the catchment size and our findings indicate that CF in long rivers (catchment > 5-10,000 Km2) is more accurately analysed using river discharge data. The precipitation-based assessment allows for considering local rainfall-driven CF, and CF in small rivers not resolved by large-scale datasets.

Item Type:Article
Refereed:Yes
Divisions:Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
ID Code:90754
Publisher:European Geosciences Union

Downloads

Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation