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Archive
by Lovat, A., Vincendon, B. and Ducrocq, V.
Abstract:
The present study assesses the impacts of the grid resolution and the descriptors of soil texture and land cover on flash-flood modelling at local and basin scales. The ISBA-TOP coupled system, which is dedicated to Mediterranean flash-flood simulations, is used with two grid-cell sizes (300m and 1000m) and various soil datasets to model 12 past flash-flood events in southeastern France. The skill of the hydrological simulations is assessed using conventional data (discharge measurements from operational networks) and proxy data such as post-event surveys and high-water marks. The results show significant differences between the experiments in terms of both the simulated river discharge and the spatial runoff, whether at the catchment scale or at the local scale. The spatial resolution has the largest impact on the hydrological simulations. In this study, it is also shown that the soil texture has a larger impact on the results than the land cover.
Reference:
Lovat, A., Vincendon, B. and Ducrocq, V., 2018: Assessing the impact of resolution and soil datasets on flash-flood modellingHydrology and Earth System Sciences Discussions, 1-33.
Bibtex Entry:
@Article{Lovat_2018,
  author        = {Lovat, A. and Vincendon, B. and Ducrocq, V.},
  title         = {Assessing the impact of resolution and soil datasets on flash-flood modelling},
  journal       = {Hydrology and Earth System Sciences Discussions},
  year          = {2018},
  pages         = {1-33},
  month         = jul,
  abstract      = {The present study assesses the impacts of the grid resolution and the descriptors of soil texture and land cover on flash-flood modelling at local and basin scales. The ISBA-TOP coupled system, which is dedicated to Mediterranean flash-flood simulations, is used with two grid-cell sizes (300m and 1000m) and various soil datasets to model 12 past flash-flood events in southeastern France. The skill of the hydrological simulations is assessed using conventional data (discharge measurements from operational networks) and proxy data such as post-event surveys and high-water marks. The results show significant differences between the experiments in terms of both the simulated river discharge and the spatial runoff, whether at the catchment scale or at the local scale. The spatial resolution has the largest impact on the hydrological simulations. In this study, it is also shown that the soil texture has a larger impact on the results than the land cover.},
  copublication = {3: 3 Fr},
  doi           = {10.5194/hess-2018-374},
  owner         = {hymexw},
  publisher     = {Copernicus {GmbH}},
  timestamp     = {2019-01-25},
  url           = {https://www.hydrol-earth-syst-sci-discuss.net/hess-2018-374/},
}