[AOS14-P05] Impacts of a nesting approach on inundation simulation by a global flood model for estuaries and deltas
The objective of this study is application of a nesting method for improving flood modelling in estuaries and deltas with a GFMs’ framework. We utilize the global river routing model CaMa-Flood and the 1D/2D hydrodynamic model Delft3D Flexible Mesh. The Delft3D Flexible Mesh models is constructed. The simulation domain is set to include the river mouth and coastal deltas, forced by daily river discharge upstream calculated by CaMa-Flood. We present the first results of the study, showing improved simulations of flood inundation estimations for Bangladesh. Some different model configurations, such as CaMa-Flood runs with and without Delft3D Flexible Mesh, are tested and the results were quantitatively compared with observed discharge and flood inundation extent.