Development of a land–river–ocean coupled model for compound floods jointly caused by heavy rainfall and storm surges in large river delta regions

Zhang, Anyifang; Yu, Xiping

doi:https://doi.org/10.5194/hess-29-2505-2025

Articles | Volume 29, issue 11

https://doi.org/10.5194/hess-29-2505-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Methodological innovations for the analysis and management...

https://doi.org/10.5194/hess-29-2505-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 29, issue 11

Research article

|

16 Jun 2025

Research article |

| 16 Jun 2025

Development of a land–river–ocean coupled model for compound floods jointly caused by heavy rainfall and storm surges in large river delta regions

Anyifang Zhang and Xiping Yu

Supplement

https://doi.org/10.5194/hess-29-2505-2025-supplement

Data sets

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

ERA5-land post-processed daily-statistics from 1950 to present Copernicus Climate Change Service, Climate Data Store https://doi.org/10.24381/cds.e9c9c792

FABDEM V1-0 L. Hawker and J. Neal https://doi.org/10.5523/bris.25wfy0f9ukoge2gs7a5mqpq2j7

Soil texture classes (USDA system) for 6 soil depths (0, 10, 30, 60, 100 and 200 cm) at 250 m (v0.2) T. Hengl https://doi.org/10.5281/zenodo.2525817

Tropical Cyclone Database M. Ying et al. https://tcdata.typhoon.org.cn/

Gridded Bathymetry Data General Bathymetric Chart of the Oceans (GEBCO) https://download.gebco.net/

A global, self-consistent, hierarchical, high-resolution shoreline database P. Wessel and W. H. F. Smith https://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html

OpenStreetMap database OpenStreetMap contributors https://www.openstreetmap.org

The 30 m annual land cover datasets and its dynamics in China from 1990 to 2020 Y. Jie and H. Xin https://doi.org/10.5281/zenodo.5210928

OSU Tidal Data Inversion G. D. Egbert and S. Y. Erofeeva https://g.hyyb.org/archive/Tide/TPXO/TPXO_WEB/

UMD Global Land Cover Classification, 1 Kilometer M. Hansen et al. http://app.earth-observer.org/data/basemaps/images/global/LandCover_512/LandCoverUMD_512/LandCoverUMD_512.html

Model code and software

e-AWBLM (v1.2) A. Zhang https://doi.org/10.5281/zenodo.15542922

SWAN+ADCIRC, Coastal & Computational Hydraulics Team J. C. Dietrich et al. https://adcirc.org

CaMa-Flood D. Yamazaki et al. https://hydro.iis.u-tokyo.ac.jp/~yamadai/cama-flood

The Variable Infiltration Capacity model version 5 (VIC-5) J. J. Hamman et al. https://github.com/UW-Hydro/VIC

Short summary

The simultaneous or sequential occurrence of different flood processes, including extreme storm surges and heavy precipitation, tends to trigger compound floods, which are often destructive. We develop a land–river–ocean coupled model for the prediction of compound floods in a big river delta region. The coupled model is shown to perform well in simulating the combined effect of heavy precipitation, river flood routing, storm surges, and inundation for events induced by tropical cyclones.