Some problems with LCZ in WRF4.5

[likeyou511]

I am a novice and recently I have been using WRF4.5 to join LCZ at the same time.
1. I am using cglc data. Should I modify the URBAN.TBL file or URBAN.TBL.ARW LCZ file. If using URBAN.TBL.ARW_LCZ. How should I operate the LCZ file?How should I operate my namelist.wps?
2. If the use of the cglc file is successful, then the classification of LCZ is based on the land type of cglc. How should I set and modify URBPARM_LCZ TBL。 Because of the transformation that occurred in the partitioning of LCZ according to the cglc file?

 

[Ming Chen]

To use LCZ as input, please follow the steps below:

(1) in namelist.wps, please set

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

you also need to use "GEOGRID.TBL.ARW_LCZ" as "GEOGRID.TBL"

(2) in namelist.input

activate LCZ: use_wudapt_lcz = 1;

activate urban physics

use noah or noahmp land surface model: sf_surface_physics= 2 or 4.

 

[likeyou511]

To use LCZ as input, please follow the steps below:

(1) in namelist.wps, please set

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

you also need to use "GEOGRID.TBL.ARW_LCZ" as "GEOGRID.TBL"

(2) in namelist.input

activate LCZ: use_wudapt_lcz = 1;

activate urban physics

use noah or noahmp land surface model: sf_surface_physics= 2 or 4.

Thanks your reply,but I don't how to use"GEOGRID.TBL.ARW_LCZ" as "GEOGRID.TBL".What should I do?I I modified the 'GEOGRID.TBL.ARW_LCZ', but the output when I run to geogrid.exe doesn't work.

 

[Ming Chen]

Please go to WPS/geogrid, where you can find various GEOGRID.TBL files. Remove the default one by "rm GEOGRID.TBL", then issue the command:
ln -sf GEOGRID.TBL.ARW_LCZ GEOGRID.TBL.

Go back to WPS, run geogrid.exe.

Let me know if you have any issues.

 

[likeyou511]

Please go to WPS/geogrid, where you can find various GEOGRID.TBL files. Remove the default one by "rm GEOGRID.TBL", then issue the command:
ln -sf GEOGRID.TBL.ARW_LCZ GEOGRID.TBL.

Go back to WPS, run geogrid.exe.

Let me know if you have any issues.

I did't "rm GEOGRID.TBL'.I'm afraid deleting this file will cause problems.
But I use this command 'ln -sf GEOGRID.TBL.ARW_LCZ GEOGRID.TBL'.And then I run geogrid.exe,it's successful.
But I did't know why use command'ln -sf GEOGRID.TBL.ARW_LCZ GEOGRID.TBL'.What is the purpose of this command？

 

[Ming Chen]

In the default WPS, GEOGRID.TBL is a file linked to GEOGRID.TBL.ARW. This is why I told you to remove it first.

If you didn't remove it, and you linked GEOGRID.TBL.ARW_LCZ as GEOGRID.TBL, then GEOGRID.TBL.ARW_LCZ will replace GEOGRID.TBL.ARW. This means that you lost GEOGRID.TBL.ARW.

I strongly recommend that you should keep all GEOGRID.TBL files.

 

[likeyou511]

In the default WPS, GEOGRID.TBL is a file linked to GEOGRID.TBL.ARW. This is why I told you to remove it first.

If you didn't remove it, and you linked GEOGRID.TBL.ARW_LCZ as GEOGRID.TBL, then GEOGRID.TBL.ARW_LCZ will replace GEOGRID.TBL.ARW. This means that you lost GEOGRID.TBL.ARW.

I strongly recommend that you should keep all GEOGRID.TBL files.

Thanks Chen,I'm still a little confused.I use this command 'ln -sf GEOGRID.TBL.ARW_LCZ GEOGRID.TBL'.
Does this mean that when I run geogrid.exe, it reads the file GEOGRID.TBL.ARW_LCZ.
But why my GEOGRID.TBL also changed appearing the same field as GEOGRID.TBL.ARW_LCZ. So I have doubts whether it is GEOGRID.TBL or GEOGRID.TBL.ARW_LCZ that is read when I run geogrid.exe.

 

[Ming Chen]

Thanks Chen,I'm still a little confused.I use this command 'ln -sf GEOGRID.TBL.ARW_LCZ GEOGRID.TBL'.
Does this mean that when I run geogrid.exe, it reads the file GEOGRID.TBL.ARW_LCZ.

Yes.

But why my GEOGRID.TBL also changed appearing the same field as GEOGRID.TBL.ARW_LCZ. So I have doubts whether it is GEOGRID.TBL or GEOGRID.TBL.ARW_LCZ that is read when I run geogrid.exe.

What do you mean? geogrid.exe always read information from GEOGRID.TBL.

 

[likeyou511]

Yes.



What do you mean? geogrid.exe always read information from GEOGRID.TBL.

Thank you very much,now I Know.

 

[likeyou511]

Yes.



What do you mean? geogrid.exe always read information from GEOGRID.TBL.

I have another question.I use the 'cglc_modis_lcz_global'.
Because this data it is classifying the LCZ as a land type now, so I have to go and enter the LCZ attributes about my own city, do I just have to go and change 'URBPARM_LCZ.TBL'?
Will the LCZ in 'URBPARM_LCZ.TBL' still correspond to the LCZ in 'cglc_modis_lcz_global'?