Why I cannot run the model with two level nesting well?

asked 2023-09-25 03:59:03 +0100

yxli
1

updated 2023-09-26 03:23:37 +0100

Hi everyone! When I try to run the model with two level nesting (three domains), the model blow up. I am sure that the time step is within the limits of the CFL. I don't know what the problem is. And I've noticed that when I manually input the subdomain boundaries in AGRIF_FixedGrids.in file, the originally blue commented sections turn black. Could this affect the model? How should I modify the file correctlly? image description

======================================= = = = STEP2D: ABNORMAL JOB END = = BLOW UP = = = =======================================

VMAX (M/S) = NaN IMAX JMAX = 147 80 NODE = 11 IMAX JMAX = 36 27 IINT IEXT = 1 1

C:\fakepath\AGRIF_FixedGrids.in C:\fakepath\cppdefs.h C:\fakepath\croco_Y2013M01.txt ->This is the.out file

I'm not sure what caused the "CHECKDIMS ERROR: inconsistent size of dimension 'xi_u': 94 (must be 148)" error, and how to modify it.

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The attached AGRIF_FixedGrids.in that you uploaded is different from the one in your post. Which one is correct?

andres ( 2023-09-26 15:16:59 +0100 )edit

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answered 2023-09-26 15:27:24 +0100

andres

96

updated 2023-09-26 15:27:47 +0100

Your AGRIF_FixedGrids.in file seems weird. From the GRD headers it should be

1

2 53 16 51 3 3 3 3

1

66 130 36 93 3 3 3 3

0

Also, your .1 domain is too close to the boundary. (2 - 53). Is that area on land?

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I'm still not sure what's weird about the AGRIF_FixedGrids. The area is not land but includes part of land. I'm going to try to narrow down the.1 domain and not include land.

yxli ( 2023-10-09 10:21:52 +0100 )edit

Hello, I would like to ask how do I properly set up multiple nested AGRIF_FixedGrids? Do we have to fix it ourselves?

yxli ( 2023-10-09 10:28:11 +0100 )edit

Warning: Contour not rendered for constant ZData > In contour (line 51) In nested_grid (line 436) In interp_child (line 75) In nestgui>interpchild_Callback (line 242) In nestgui (line 49) This is the warning that appeared when I nested, will it affect the result?

yxli ( 2023-10-09 11:49:29 +0100 )edit

When doing second level nesting should the top option in the nestgui interface be "child grid file"? Or "parent grid file"? Maybe that's the problem?

yxli ( 2023-10-09 12:14:26 +0100 )edit

I have solved the problem, thank you for your advice!

yxli ( 2023-10-09 16:28:29 +0100 )edit

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answered 2023-09-26 03:31:34 +0100

yxli
1

C:\fakepath\param.h C:\fakepath\croco_grd_head.txt C:\fakepath\croco_grd_1_head.txt C:\fakepath\croco_grd_2_head.txt

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answered 2023-09-25 22:50:50 +0100

andres

96

Questions:

Does it runs ok for main domain (no nesting)? Does it runs ok for one nested domain?

Please post your param.h and the result of

ncdump -h croco_grd.nc

ncdump -h croco_grd.nc.1

ncdump -h croco_grd.nc.2

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The model runs both without nesting and with one nesting. Because this reply seems to be unable to add file links, I have attached the param.h file and the file after ncdump to the answer below.

yxli ( 2023-09-26 03:31:17 +0100 )edit

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