WRF lower boundary

Problems with data in 3DVAR.

WRF lower boundary

Postby Tornerdo » Tue Nov 05, 2019 5:43 pm

Greetings,

I am driving WRF with GCM output from CESM2, and I had a question about the lower boundary. I only have the 3-D fields (T, u, v, q, etc.) at 6-h intervals however. If I were to use daily averaged 2-m temperature and specific humidity, and surface skin temperature from the GCM to drive WRF, would this be an issue? To my knowledge, the lower boundary is not updated at 6-h intervals; only the lateral boundary tendencies are updated at 6-h intervals. More specifically, the 2-D fields mentioned are just initialized, but are subsequently calculated online by WRF regardless of the information from the driving data (the GCM).

Thoughts and comments are appreciated.

Thanks in advance,
-Stefan Rahimi
UCLA
Tornerdo
 
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