3DVAR nested domain problem

Issues with running 3DVAR.

3DVAR nested domain problem

Postby jjasonlam » Fri Jun 16, 2017 10:12 pm

Hi all,

I am currently running a wrf simulation with 4 nested domains.
I am thinking of doing 3dvar on the 2nd domain only, and will compare observation data with the forecast from domain 4, so that I can quantify the result for each domain specifically.
However, if I only do 3dvar on the 2nd domain, the 3rd and 4th domain initial condition will be different that what provided by the 2nd domain, due to that fact that the wrfinput is provided by real.exe prior to the 3dvar process.

real.exe -> wrfinput d01,wrfinput d02,wrfinput d03,wrfinput d04
3dvar-> wrfvaroutput d02 -> wrfinput d02

The question here is, if I am going to do 3dvar on the 2nd domain, do I actually required to do 3dvar on the 3rd and 4th domain as well?

Thank you so much for your help.
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