WRF ideal LES simulation - Setting of coriolis parameter and roughness

[FraFerra]

Hello,
I'm trying to run very high-resolution ideal large eddy simulation with wrf, version 4.3.3.
I'm wondering how to set coriolis parameter and roughness z0.
To control coriolis parameter I have seen that does exist pert_coriolis variable in the namelist, but I have no understood how I can change the value of the coriolis parameter.
Thank a lot in advance,


Francesco

 

[xxi]

Hi,
Have you solved this problem? I'm also wonder how to change z0 in ideal les and could you share with me?
Thank you very much!

 

[Ming Chen]

The default option of pert_coriolis is False, which indicates that coriolis force related to geostrophic wind terms in the right-hand sides of the u and v equations are calculated. if you set it to True, only the effect of perturbation winds are considered.

To answer your question of Z0, please see module_physics_init.F, in which you can find ZZLND=0.1. This is the value you should chnage based on your specific need.

Let me know if you have more questions.

 

[xxi]

The default option of pert_coriolis is False, which indicates that coriolis force related to geostrophic wind terms in the right-hand sides of the u and v equations are calculated. if you set it to True, only the effect of perturbation winds are considered.

To answer your question of Z0, please see module_physics_init.F, in which you can find ZZLND=0.1. This is the value you should chnage based on your specific need.

Let me know if you have more questions.

Hi,
Thank you very much! I have succesfully changed z0 in my setting.But I'm little confused about the difference of ZZLND and Z0 in module_physics_init.F.Should I change both of them?

 

[Ming Chen]

No, you only need to change ZZLND.