Re: Regridding Daymet Joined Tiles with ESMF_Regridding on NCL 6.1.0

From: Ping Yang <pyang_at_nyahnyahspammersnyahnyah>
Date: Mon Nov 05 2012 - 10:03:17 MST

Dear NCL,

I uploaded two files to ftp:
NE_Daymet_20000214_prcp.nc
daymet_regrid.ncl

NCAR Command Language Version 6.1.0

Linux 2.6.38-16-server #67-Ubuntu SMP Thu Sep 6 18:15:24 UTC 2012 x86_64
x86_64 x86_64 GNU/Linux

Error: ESMF_regrid_gen_weights: 'ESMF_RegridWeightGen' was not successful.

Looking forward to hearing from you.

Best Regards,

Ping

On Mon, Nov 5, 2012 at 10:46 AM, Mary Haley <haley@ucar.edu> wrote:

> Ping,
>
> In order to help you, we have to see your full script and all your data
> files. Without knowing what your variables look like, we can't tell you how
> to correctly do the regridding.
>
> You can put your data and script(s) on our anonymous ftp. Be sure to
> include *all* data files and scripts needed to run your main script.
>
> Here are the anonymous ftp instructions:
>
> http://www.ncl.ucar.edu/report_bug.shtml#HowToFTP
>
> Thanks,
>
> --Mary
>
> On Nov 3, 2012, at 9:37 PM, Ping Yang wrote:
>
> > Dear NCL,
> >
> > I am still stuck at here for the joined Daymet grid.
> >
> > On Tue, Oct 30, 2012 at 6:40 PM, Dave Allured <dave.allured@noaa.gov>
> wrote:
> > Ping,
> >
> > Your script is using sfile->lat and sfile->lon. If this is the same
> > merged file that you showed yesterday, then sfile->lat and sfile->lon
> > will contain gaps filled with zeros rather than valid lats and lons.
> > This may or may not cause the regrid function to fail. Perhaps
> > someone familiar with that function could say whether this would work.
> > the zeros value made the ESMF regriding fail.
> >
> > The simple remedy would be to operate on a rectangular subset of the
> > merged file that does not have any coordinate gaps.
> > What is a rectangular subset? I tried to use cdo to sellonlatbox to
> subset but it told me the grid is a generic grid which can not be subseted.
> > The better remedy
> > would be to fill in all of the missing lats and lons, which is beyond
> > the scope of the current version of my join script.
> > I am thinking is that possible to interpolate those missing lats and
> lons instead of put zero value to them. Do you have some idea?
> >
> > Another solution would be to have the regrid function compute source
> > lats and lons from native grid projection parameters, rather than the
> > source 2-D coordinates. I do not know whether *any* NCL regrid
> > functions have this kind of support.
> > I hope if there is an ESMF specialist can give some advice on this.
> >
> > Thank you so much.
> >
> > Regards,
> >
> > Ping
> > _______________________________________________
> > ncl-talk mailing list
> > List instructions, subscriber options, unsubscribe:
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>

-- 
Ping Yang, Ph.D.
CUNY Environmental Crossroads Initiative
Marshak Science Building - Suite 925
The City College of New York - CUNY
160 Convent Avenue, New York NY 10031
Phone: 212-650-5769
Fax: 212-650-7064

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Received on Mon Nov 5 10:03:40 2012

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