Articles | Volume 26, issue 21
https://doi.org/10.5194/hess-26-5473-2022
https://doi.org/10.5194/hess-26-5473-2022
Research article
 | 
03 Nov 2022
Research article |  | 03 Nov 2022

Investigating coastal backwater effects and flooding in the coastal zone using a global river transport model on an unstructured mesh

Dongyu Feng, Zeli Tan, Darren Engwirda, Chang Liao, Donghui Xu, Gautam Bisht, Tian Zhou, Hong-Yi Li, and L. Ruby Leung

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Preprint under review for HESS
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Cited articles

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Bates, P. D., Quinn, N., Sampson, C., Smith, A., Wing, O., Sosa, J., Savage, J., Olcese, G., Neal, J., and Schumann, G.: Combined modeling of US fluvial, pluvial, and coastal flood hazard under current and future climates, Water Resour. Res., 57, e2020WR028673, https://doi.org/10.1029/2020WR028673, 2021. 
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Sea level rise, storm surge and river discharge can cause coastal backwater effects in downstream sections of rivers, creating critical flood risks. This study simulates the backwater effects using a large-scale river model on a coastal-refined computational mesh. By decomposing the backwater drivers, we revealed their relative importance and long-term variations. Our analysis highlights the increasing strength of backwater effects due to sea level rise and more frequent storm surge.