How to invoke the variance output by the boundary layer scheme

U

Uzi

New member
Dear NCAR team，
Now I want to call the variables calculated by the mynn scheme or the mrf scheme in the module_stoch.F file. That is, the variance for u, v, t and q is in the turbulence closure framework. u and v are wind, t is potential temperature, and q is the water vapor mixture ratio. Whether these variables need to be registered in Registry.EM_COMMON and then used, but I'm not sure which one in the scheme is the corresponding variable. Wish you a happy life and look forward to your reply.
Zhu Weihao
 
Ming Chen said:
I am not quite clear of your question...

Can you clarify?
Click to expand...
Sorry for not expressing it clearly. This problem has been solved. Now I want to add perturbations only to the tendencies RTHBLTEN and others output by the boundary layer parameterization scheme . For example, add random numbers of Gaussian distribution to their values. However, I won't handle them directly. Therefore, I add perturbations to the sum of the tendencies of parametric schemes, such as t_tendf, ru_tendf, etc. They are the sum of the tendencies output by parametric schemes such as boundary layers, cumulus clouds, and microphysics. May I ask if this can achieve the same effect? In the wrf mode, when calculating variables, is the sum of the tendencies taken first and then carried out? If so, I think such a modification should be fine. Looking forward to your reply.
 
I suppose that your approach is correct. This is because WRF doesn't update variables in individual physics.
 
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