wrf_alessandro
Member
Hi,
I am using ndown to generate boundary conditions for a finer simulation. The coarser domain generally well reproduces the reference data but the precipitation of the nested domain is heavily overestimated (please look at the attached figures). The ndown namelist and the run namelists are attached.
I suspect this issue is generated when I run ndown, as I am attempting to change spec_bdy_width (and relax_zone) from 10 points of the parent domain to 5 points in the nested domain. I wonder if it is allowed to change the number of boundary points in ndown? If not, I have use a spec_bdy_width of 10 points even in the nested domain or I can change the width in some way? Besides, are 3h output from the coarse grid run enough to provide good boundary specifications?
Thanks in advance for your support.
Alessandro
I am using ndown to generate boundary conditions for a finer simulation. The coarser domain generally well reproduces the reference data but the precipitation of the nested domain is heavily overestimated (please look at the attached figures). The ndown namelist and the run namelists are attached.
I suspect this issue is generated when I run ndown, as I am attempting to change spec_bdy_width (and relax_zone) from 10 points of the parent domain to 5 points in the nested domain. I wonder if it is allowed to change the number of boundary points in ndown? If not, I have use a spec_bdy_width of 10 points even in the nested domain or I can change the width in some way? Besides, are 3h output from the coarse grid run enough to provide good boundary specifications?
Thanks in advance for your support.
Alessandro