Errors running real.exe

[Xochitl H.]

I am attempting to run real, but keep receiving an ' invalid parent id for domain 2' error. I've checked my inputs and they seem to be correct. Attached are my rsl.error.0000, namelist.wps, and namelist.input files. Any help is greatly appreciated! Thank you!

 

[kwerner]

Hi, I'm not sure why you're getting that particular error, but I do see a couple issues that may be worth correcting before trying to move forward.

1) You have a parent_grid_ratio of 15:1, which is much too large of a resolution gap between the the two domains. It's recommended to not use a resolution more than about 5:1.

2) You have p_top_requested = 10000. Unless you are aware that your input data only go up to that level, you should leave that set to the default value of 5000.

Try modifying those before running geogrid and metgrid, then re-run real.exe to see if it gives the same error. You may find the links from this Best Practices page useful - specifically the namelist settings.

 

[Xochitl H.]

I have previously ran a simulation with this exact namelist and it worked. I tried resetting the p_top_requested as you suggested and received the same error.

I'm unsure why it does not work now, when I was able to complete the full simulation previously. The only major change since then was the geog_data_res (from default to default_nlcd2011_9s)

 

[kwerner]

Okay I believe I've tracked down the issue. It makes no sense that you were getting an error related to the parent_id because it has nothing to do with that, but the problem is that, in the &domains namelist record, num_land_cat is set. That parameter needs to be in the &physics record, instead. You do have it there, as well, but it needs to be removed from the &domains record, and you need to set it to 40 in the &physics record.

That being said, you should still consider using a smaller parent_grid_ratio - something more like 5:1. As I mentioned before, the results will likely not be as reasonable as expected with such a big difference in domains.