Xynthia storm

Case description

Real case simulation of the Xynthia storm that hit western France in February 2010. High-resolution simulation at 2.5km grid spacing with comprehensive physics including turbulence, radiation, and cloud microphysics.

Configuration

Steps

Step	Script
001_pgd	run_pgd
002_prep_real	run_prep_real_case
003_run	run_mesonh

Specificities

Scientific specificities - Severe storm simulation with strong winds - Coastal flooding case study - Explicit deep convection at 2.5km resolution

Technical specificities - Use of WENO5 advection for V variable - EDKF for shallow convection - 2-way horizontal relaxations

Validation

Comparison with observed wind speeds
Surface pressure validation
Rainfall patterns

Numerical ressources

10 nodes, 320 cores (MPI parallel)

References

Xynthia storm observations (Meteo-France)