Articles | Volume 20, issue 6
https://doi.org/10.5194/nhess-20-1765-2020
https://doi.org/10.5194/nhess-20-1765-2020
Brief communication
 | 
17 Jun 2020
Brief communication |  | 17 Jun 2020

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

Emanuele Bevacqua, Michalis I. Vousdoukas, Theodore G. Shepherd, and Mathieu Vrac

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Short summary
Coastal compound flooding (CF), caused by interacting storm surges and high water runoff, is typically studied based on concurring storm surge extremes with either precipitation or river discharge extremes. Globally, these two approaches show similar CF spatial patterns, especially where the CF potential is the highest. Deviations between the two approaches increase with the catchment size. The precipitation-based analysis allows for considering local-rainfall-driven CF and CF in small rivers.
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