Model blowup 2009

[adilsonborges]

I was performing a long integration (1985 to 2015), when in December 2009 the model stopped, the .out shows me the following error:

NETCDF_GET_DIM - too small dimension parameter, Mdims = 50*****
change file mod_netcdf.F and recompile
Found Error: ** Line: 330 Source: ROMS/Modules/mod_netcdf.F, netcdf_get_dim

NETCDF_GET_DIM - unable to inquire about contents of input NetCDF file: /scratch/leonardo.lima/Data/Forcing/Atmosphere/CFSR/CFSR-2010-blk-TSA-roms-Uwind_2.nc
call from: ROMS/Utility/inquiry.F
Found Error: 02 Line: 462 Source: ROMS/Modules/mod_netcdf.F, netcdf_check_dim
Found Error: 02 Line: 176 Source: ROMS/Utility/inquiry.F
Found Error: 02 Line: 119 Source: ROMS/Utility/get_2dfld.F
Found Error: 02 Line: 134 Source: ROMS/Nonlinear/get_data.F
Found Error: 02 Line: 205 Source: ROMS/Nonlinear/main3d.F
Found Error: 02 Line: 274 Source: ROMS/Drivers/nl_ocean.h

Is it a problem with my atmospheric forcing?
Can anyone help?
Thank you very much!

[kate]

NETCDF_GET_DIM - too small dimension parameter, Mdims = 50*****
change file mod_netcdf.F and recompile

I believe the problem is described here. Can you do as they suggest?

[adilsonborges]

Thank you for reply, Kate

But the model run until 2009 before changing the folder where the atmospheric forcing from 2010 to 2015. Do you think I should recompile?

[kate]

I don't know what you changed to make it run out of dimensions. I've not yet run out of dimensions or I would have changed it myself. You have at least two choices - recompile it and run with it if it works or dig into what's really going on. If the first doesn't work, then you're down to the second choice anyway.

[adilsonborges]

Where can I have changed the dimensions? All right, Kate. I will do this. Thank you very much for your attention.

Best regards,

[kate]

change file mod_netcdf.F and recompile

From the top of the ROMS source directory, I do "vi */*/mod_netcdf.F", then search for the string Mdims.

My "vi" is aliased to "vim". I assume there's some text editor you know how to use.

[adilsonborges]

Ok Kate, Thank you,
Do you totally rule out some mistake in the forcing? In the folders set in the .in file?

[kate]

Ok Kate, Thank you,
Do you totally rule out some mistake in the forcing? In the folders set in the .in file?

Not at all. As I said, I've never run out of dimensions and I use a lot of forcing files. Tools for trouble-shooting these things include (a) modifying the code as suggested and seeing what happens - shouldn't take long, after all and (b) running in a debugger and watching it run out of dimensions, seeing if something looks odd and fixing it. Option (b) requires a debugger and some idea of how to use it. I can't tell from here what's going on, honestly.

[adilsonborges]

Ok, Kate,

Thank you very much!

[adilsonborges]

Hi Kate and all,

I recompiled ROMS by changing the Mdims to 100 and to 1000, I did tests starting on 01 of 2010 and this runs normally. The model is no more than month 12 of 2009 for month 01 of 2010. I found that forcants do not influence. I do not know what this error is about, maybe a problem when compiling, I do not know. My grid contemplates the Equatorial Atlantic (10N 10S and 60W 20W), with all edges of the grid open. In my .h file is set:

#undef EASTERN_WALL
#undef NORTHERN_WALL
#define WESTERN_WALL
#undef SOUTHERN_WALL

#define RADIATION_2D

Is there any influence of these settings on this error?

Best regrads

[kate]

I have no idea what's going on, but this:

#undef EASTERN_WALL
#undef NORTHERN_WALL
#define WESTERN_WALL
#undef SOUTHERN_WALL

implies that your ROMS version is really very dated. You might want to download something more modern to see if that makes a difference.

[adilsonborges]

Kate, thank you very much

I will continue trying to solve, who knows how to download again the roms code does not work?

Thanks for the help always!
Best regards

[kate]

What sort of problems are you having with downloading the code?

[adilsonborges]

Sorry, Kate, no problem.

I compiled using an older code (April 2017) and it worked.

Thanks a lot for the help!