Can grid nuding and spectral nudging be used together？

[wrfyangliu]

Hello,
I have a question. From user's Guide, I found that if_zfac_q (max_dom) and k_zfac_q (max_dom) are for grid nuding ？Does it also suitable for spectral nuding?
For grid nudging, nudging u and v, temp, qvapor in the PBL. For spectral nudging, nudging u and v, temp, geopotential height in the PBL. Can grid nuding and spectral nudging be used together？ I want to nudge u and v, temp, qvapor, geopotential height in the PBL, is it possiable?

 

[Ming Chen]

You can only run either grid nudging or spectral nudging. The two options cannot work simultaneously.

if_zfac_q (max_dom) and k_zfac_q (max_dom) are options for both grid nudging and spectral nudging.

 

[wrfyangliu]

Thanks for your response.
Does this mean that u and v, temp, geopotential height and qvapor can all be nudgingedn in the PBL for spectral nudging?

 

[Ming Chen]

Yes that is correct.

 

[wrfyangliu]

Got it, thanks again for your reply.