[ncl-talk] ESMF_regrid

[Dennis Shea]

I have looked at your script and the PET0.RegridWeightGen.Log log file.

I 'Googled' the last (unhelpful) message output by esmf_regrid:
ESMF_regrid_gen_weights: 'ESMF_RegridWeightGen' was not successful

There were several 'hits'. However, none provided any information on what
causes this message.
====

I note that the *destination* grid description file was **successfully**
generated
         destination.grid_onCells.5898242.to_0.1deg.nc

However, no *source* grid description file was generated. This is needed
for the interpolation to proceed.
Why it is not generated is not obvious. However,  the unstructured grid is
quite large.

        nVertLevels = 55 ;
        nCells = 5898242 ;
        StrLen = 64 ;
        nEdges = 17694720 ;
        nVertices = 11796480 ;

You said you  "have successfully used the same script many times in the
past so I am not sure what the current issue is.
Have you used it on this unstructured grid?
I ask, because if you did, you should have the source grid description
file. You can use that.

Not sure I can offer any more insight.


On Mon, Sep 30, 2019 at 8:38 PM Laura Fowler via ncl-talk <ncl-talk at ucar.edu>
wrote:

> Hello:
>
> I have issue with ESMF_regrid to interpolate an unstructured MPAS mesh to
> a regular 1deg by 1deg latitude-longitude grid, at the step when we
> generate the weights (see attached regrid.out file and the ncl script
> regrid.to_CMORPHdata.ncl). I have successfully used the same script many
> times in the past so I am not sure what the current issue is. Also it is
> difficult for me to find where ncl crashes in the ESMF sourcecode.
>
> The two files and the MPAS mesh are also located in
> /glade/work/laura/MPASprojects2019/myMPAS-v6.2/initialization.5898242
>
> I would really appreciate your help,
> Thanks,
> Laura
>
>
>
> --
>
> !-------------------------------------------------------------------------------------------------------------
> Laura D. Fowler
>
> Mesoscale and Microscale Meteorology Division (MMM)
> National Center for Atmospheric Research
> P.O. Box 3000, Boulder CO 80307-3000
>
> e-mail: laura at ucar.edu
> phone: 303-497-1628
>
>
> !-------------------------------------------------------------------------------------------------------------
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