Question about removing orography in WRF

[WHY]

Dear WRF&MPAS experts,

I want to perform a sensitive experiment about orography in WRF, can i directly modify the HGT in wrfinput file?
Or should i remove it in geo_em file and run metgrid.exe and real.exe again?

I am very appreciated for your help!

 

[Ming Chen]

I would suggest you remove HGT from geo_em.nc files, then rerun metgrid.exe and real.exe. This is because HGT is used for vertical interpolation in REAL program. It affects both wrfinput and wrfbdy files. If you simply remove it from wrfinput, its impact still exists in wrfbdy.

 

[WHY]

I would suggest you remove HGT from geo_em.nc files, then rerun metgrid.exe and real.exe. This is because HGT is used for vertical interpolation in REAL program. It affects both wrfinput and wrfbdy files. If you simply remove it from wrfinput, its impact still exists in wrfbdy.

Thank you for your help again!