Using different NCAR datasets for initial and boundary conditions

[cblackshaw]

Hello,

I'm interested in using two different datasets (NARR and GFS-FNL) - one for my initial conditions and the second for the lateral boundary conditions for the rest of the simulations. Is this possible and if so I am unsure how to specify this in the namelist.input or wrf model files.

I would appreciate any advice you may have for WRFV4.4.2 or WRFV3.9.1.

Thank you!

 

[kwerner]

Hi,
Take a look at this section of the WRF Users' Guide, which discusses your inquiry. Hopefully that helps!

 

[cblackshaw]

Thank you very much! This is extremely helpful

I'm struggling running real.exe because the two datasets I'm using have a different number of metgrid_levels. Is there a way around this?

Thank. you again

 

[kwerner]

After you run WPS for both datasets, determine how many metgrid levels are in the met_em* files, using the following command (for your specific date/time):

ncdump -h met_em.d01.YYYY-MM-DD_hh:mm:ss.nc | grep -i num_metgrid_levels

You can use that value in namelist.input before running real.exe.