the lat-lon values placed in the d02 moved with respect to d01

[xpji]

Hi, all.
question describe：
I set the Mercator projection in the namelist.wps of WPS and set up 2 layers of nested areas. The latitude range of the first layer is -30~30, and the latitude range of the second layer is -20~20.

In the output wrfoutput file, The lat range in the d01 result is consistent with the setting, but the latitude range in the d02 file is displayed as -30~10°.

process of trying to solve：

When checking XLAT and XLONG, the lat-lon values placed in the d02 moved with respect to d01.

I checked the met*d02 file, and its latitude range is -20~20, and also carefully checked the domain area and the latitude range of the wrfinput* file and found that it is consistent with the set -20~20.

However, in the result after running wrf.exe, the lat range of the d02 output file becomes -30~10, only the lat range of the first moment is -20~20, and the others are -30~10.

A similar change occurs for the value of longitude. Re-run wrf.exe still has the same problem.

---

The following is my namelist.wps and namelist.input, hope to get an answer, thank you.

namelist.wps

namelist.input

 

[Ming Chen]

Your namelist.wps looks fine.
It seems that the link of your namelist.input is the same as the name;ist.wps. The download file is namelist.wps. Please double check and correct the link.

 

[xpji]

Your namelist.wps looks fine.
It seems that the link of your namelist.input is the same as the name;ist.wps. The download file is namelist.wps. Please double check and correct the link.

thank you for your reply. the link of namelist.input is here : namelist.input

 

[Ming Chen]

Hi
I looked at your namelist.wps and names.input. They are consistent regarding the domain settings. I see no reason why wrfout D02 ould shift to a different place.

This is a big case that is hard to repeat. Can you create a smaller case ( smaller grid umbers in D01 and D02) with mercator project, and check whether you can see the same issue? If so, please sed me your namelist files and I will see whether I can repeat the error.

 

[xpji]

Hi
I looked at your namelist.wps and names.input. They are consistent regarding the domain settings. I see no reason why wrfout D02 ould shift to a different place.

This is a big case that is hard to repeat. Can you create a smaller case ( smaller grid umbers in D01 and D02) with mercator project, and check whether you can see the same issue? If so, please sed me your namelist files and I will see whether I can repeat the error.

Hi！Thank you for your reply！
## the cause of this problem##
I think I found the cause of this problem: the moving grid was selected when compiling WRF at the beginning.
## recent progress
After a lot of web searching, I found in the NEST_POS file of my d01 file that the area of d02 has shifted.
Maybe that's what's causing this problem.
## trying to solve：
I'm trying to correct this error and re-run WRF, I hope my judgment is correct.
If it still doesn't work out, I'll create a small simulated area and send all the files.
##
Thank you again, thank you for your reply, it makes me feel very warm. Wish you a happy life！

 

[Ming Chen]

So this is a moving-nest case? If so, then it makes sense that D02 shifts to different position during the integration.

 

[xpji]

So this is a moving-nest case? If so, then it makes sense that D02 shifts to different position during the integration.

Yes, judging from the d02 file I have already run, there is no such problem！