Hello everyone,
I am planning to run the WRF model over a mountainous region with a very high horizontal resolution of approximately 300 meters. Before starting the simulations, I would like to better understand the important considerations required to ensure model stability and avoid numerical problems.
In particular, I would appreciate guidance on the following points:
Thank you in advance for your help.
I am planning to run the WRF model over a mountainous region with a very high horizontal resolution of approximately 300 meters. Before starting the simulations, I would like to better understand the important considerations required to ensure model stability and avoid numerical problems.
In particular, I would appreciate guidance on the following points:
- How should the physical and dynamical stability of the model be handled at such high resolution?
- Which physics schemes are recommended for a 300 m setup in complex terrain?
- Should cumulus parameterization be turned off completely at this resolution?
- Which PBL, surface layer, and microphysics schemes are more suitable for convection-permitting or near-LES simulations?
- What additional options should be activated to improve numerical stability (e.g., damping, diffusion, adaptive time step, turbulence options)?
- Are there specific options that should be disabled to avoid instability or unrealistic behavior?
- How important is terrain smoothing in mountainous regions at this resolution?
- Are there any recommended settings for vertical resolution, time step, or nesting strategy?
Thank you in advance for your help.
