The problem of using double-layer nesting and LCZ map namelist setting in WRF4.3.3

[fpw]

I am running a max_dom=2 case using WRF4.3.3, where I am using the LCZ map generated by the w2w program. My namelist-INput has been set according to the namelist-1 and namelist-2 in the attachment, but only the settings in namelist-1 have been successfully executed. Running according to the settings in namelist-2 shows that the parameter settings in physics are incorrect. The only difference between the two namelists is the modification of the physics section.
By the way, I tested it successfully with max_dom=1 before using it. In the case of max_dom=2, only the grid was modified, and the other parameter schemes were not changed.
May I ask if the settings in namelist-1 are correct? Or am I making mistakes somewhere else?
Looking forward to everyone's reply！Thank you！

 

[Ming Chen]

Please update your WRF to WRFv4.5 and/or newer version. We fix a few bugs related to LCZ in older version.

Try the new version and let me know if you still have any issues. Thanks.

 

[fpw]

Please update your WRF to WRFv4.5 and/or newer version. We fix a few bugs related to LCZ in older version.

Try the new version and let me know if you still have any issues. Thanks.

Hello, thank you for your reply!
I am currently using WRF4.7 for the same simulation, but I am confused about the situation where the parent domain ID is invalid and another fatal called that appeared in the rsl.error.0004 file. Cloud you please give me some advice and I would appreciate that. The attachment contains the rsl.error.0000 and 0004 generated after running real, as well as namelist.input and namelist.wps.My WPS version is 4.6.

 

[Ming Chen]

Hi,
I will be on vacation during May 9-16. I will get back to you after I am back to office, Sorry for the delay and thank you for your patience.

 

[Ming Chen]

In your namelist.wps, please set

geog_data_res = 'lcz_new+default','lcz_new+default',

Then rerun geogrid.exe and metgrid.exe before you move on to run REAL and WRF. Let me know if you still have issues for this case.

 

[fpw]

In your namelist.wps, please set

geog_data_res = 'lcz_new+default','lcz_new+default',

Then rerun geogrid.exe and metgrid.exe before you move on to run REAL and WRF. Let me know if you still have issues for this case.

I am glad to receive your reply and I hope you had a lovely holiday!I apologize for not responding in a timely manner as I have been testing WRF4.6 for the past few days. The previous issue has now been resolved as I modified the eta_levels settings. Now three new issues have arisen.

The first question. I used the w2w program to import LCZ data into the file generated by geogrid.exe, and then successfully ran metgrid.exe and real.exe. However, after running wrf, a “fatal called” occurred: “too many input landuse types”. I know that WRF has changed the LCZ number from 31-41 to 51-61 in the new version, and then I checked the file generated by W2W and it shows num_land_cat=41. May I ask if it is related to this or due to other problems? If so, how can I set it up so that w2w can generate a file with num_land_cat=61.

The second question. Due to the existence of the first question, I used the cglc_modis_lcz land type provided by WRF, and everything went smoothly afterwards. However, I have some puzzles about the namelist.input settings. The case I am running is 2 doms, but if I set ‘sf_urban_physics=1,1; use_wudapt_lcz=1,1’ in&physics, running wrf will display that these two parameters are invalid and stop running. If I set ‘sf_urban_physics=1; usew_udapt_lcz=1’, it can run successfully. I am wondering that is this correct? Can‘t I set up two grids separately?

The third question. After successfully running the cglc_modis_lcz land type provided by WRF, I want to modify the anthropogenic heat (AH) data in URBPARM_LCZ.TBL for scenario simulation. But whether I set “AH = 0 and ahoption=0” or not, the size of the HFX variable in wrfout is exactly the same in both cases. I have conducted many simulations without using LCZ before, and there were significant differences in the results of HFX in both scenarios, so I am very confused about this and hope to get your help.
The attachment contains the namelist. input file and the rsl.erroneous 0022 file that contains “fatal called”.Only num_land_cat in namelist.input was modified between different cases.
Looking forward to your reply.
A lot of thanks!