Habets et al. (2008) The SAFRAN‐ISBA‐MODCOU hydrometeorological model applied over France

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Identification

• Journal: Journal of Geophysical Research Atmospheres
• Year: 2008
• Authors: Florence Habets, Aaron Boone, Jean-Louis Champeaux, Pierre Etchevers, L. Franchistéguy, Étienne Leblois, E. Ledoux, Patrick Le Moigne, Éric Martin, Sophie Morel, J. Noilhan, Pere Quintana Seguí, Fabienne Rousset-Regimbeau, Pascal Viennot
• DOI: 10.1029/2007jd008548

Research Groups

Météo-France (Implied, as they developed and applied the SAFRAN-ISBA-MODCOU system, SIM)

Short Summary

This study describes the application and 10-year (1995-2005) validation of the nationwide hydrometeorological model SIM (SAFRAN-ISBA-MODCOU) across France, demonstrating its capability to reproduce spatial and temporal water flux variability, with reasonable to good efficiency for streamflow simulation.

Objective

• To present the databases and assess the performance of the SIM hydrometeorological model, extended over all of France, by comparing 10 years of simulation results (1995-2005) against observations of streamflow, piezometric head, and snow depth.

Study Configuration

• Spatial Scale: National scale (All of France).
• Temporal Scale: 10 years (1995 to 2005); hourly time step for atmospheric forcing; daily time step for assessment.

Methodology and Data

• Models used: SIM (SAFRAN, ISBA, MODCOU).
  • SAFRAN: Meteorological analysis system.
  • ISBA: Land surface model.
  • MODCOU: Hydrogeological model.
• Data sources: Observations of daily streamflow (at more than 900 river-gauging stations), piezometric head, and snow depth.

Main Results

• The SIM model successfully reproduces the spatial and temporal variabilities of water fluxes across France.
• Streamflow simulation efficiency:
  • 66% of simulated river gauges achieved an efficiency metric (implied Nash-Sutcliffe Efficiency or similar) above 0.55 (reasonable results).
  • 36% of simulated river gauges achieved an efficiency metric above 0.65 (rather good results).
• The model performs worse during the driest years, likely due to the explicit simulation of only a few aquifers.
• Annual evolution of snow depth is well reproduced, showing a square correlation coefficient of approximately 0.9 across the large altitude range.
• The overall error of the simulated latent heat flux, estimated using streamflow observations, was found to be less than 4%.

Contributions

• Extension and application of the SIM hydrometeorological system (SAFRAN-ISBA-MODCOU) to provide homogeneous, nationwide monitoring of water resources across all of France.
• Comprehensive 10-year validation of the integrated system using multiple observational datasets (streamflow, groundwater, snow depth).
• Quantification of the system's performance metrics for streamflow simulation and estimation of the overall error in latent heat flux simulation.

Funding

[Not specified in the provided text.]

Citation

@article{Habets2008SAFRANISBAMODCOU,
  author = {Habets, Florence and Boone, Aaron and Champeaux, Jean-Louis and Etchevers, Pierre and Franchistéguy, L. and Leblois, Étienne and Ledoux, E. and Moigne, Patrick Le and Martin, Éric and Morel, Sophie and Noilhan, J. and Quintana‐Seguí, Pere and Rousset-Regimbeau, Fabienne and Viennot, Pascal},
  title = {The SAFRAN‐ISBA‐MODCOU hydrometeorological model applied over France},
  journal = {Journal of Geophysical Research Atmospheres},
  year = {2008},
  doi = {10.1029/2007jd008548},
  url = {https://doi.org/10.1029/2007jd008548}
}

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