WRF namelist.input auxinput4_interval (max_dom)

[zhaneden]

Hello,

Intro of the simulation, namelist setting: I used ERA5 reanalysis data, set 3 domains, parent domain 1, child domain of d01 and child domain of d02, with grid ratio 1:3:3.
input_from_file = .true.,.false., .false.,

I also updated SST by adding the variables below into the namelist:

auxinput4_inname = "wrflowinp_d<domain>"
auxinput4_interval = 180,
io_form_auxinput4 = 2
/

So i got only wrflowinp_d01, no wrflowinp_d02 and d03, then i ran the model.

The problem is later i found auxinput4_interval should be max_dom, but WRF still ran successfully. Could any one explain why that happened? Does that mean all child domains use the low boundary condition of the domain 1 (wrflowinp_d01)?

Thank you very much.

 

[kwerner]

Hi,
When planning to incorporate the sst_update option during WRF, you should run WPS for the full date/time span for all three domains, and then input_from_file should be set to "true" for all three domains. As to why the model ran without any issues, without digging deep into the code, I can't say for sure why it allows this, or what is happening, but you should run it again, using all domains.

 

[zhaneden]

Hello,

Thank you so much for your reply. Please find the attached namelist. I actually had met_em files for all domains with updated SST. So I will change the input_from_file to T for all domains and run it again.

Have a great day!

 

[kwerner]

Ok, thanks! Let me know the outcome of the new run when it's done.