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On 2 Feb 1999, Jason Burks wrote:
>
> Robb,
> I have found out a little more about the NOGAPS it is on the 240 grid.
> Now what do I have to modify to make gribdump to recognize the new
> grid? The files I have noticed that I think I have to change are
Jason,
Here's the changes I would make, I'll probably miss some changes so you
will have to use the debugger.
In gbytem.c, under case FNOC add, with ? the size of the grid in bytes:
case 240: return full_gbytem(?);
> models.h, add:
#define MODEL_240 ...
statement.
models.c
A new switch statement needs to be added for CENTER_FNOC. ie
case CENTER_FNOC:
switch(model) { /* does anyone know names for these? */
case MODEL_240:
return "description here";
default:
return "unknown FNOC model";
...
gdes.c (maybe a new subroutine fnoc_240() to describe needed
> parameters, nx=,ny=, la1=, dx=,etc).
Yes, add under case CENTER_FNOC: after 223 ....
case 240: return fnoc_240();
Then create procedure fnoc_240 using one of the other models as a
template. You will have to look at the 240 structure and the gdes.h file
for this part.
This is going to a trial and error method of building a completely new
grid. Be patience, it's not simple because of the numerous possibilities.
The ruc2.cdl file took me 5 days to complete and I had experience building
complex cdls. After you complete this, could I have the changes to enter
into the code in case some one else wants a FNOC model?
Good luck
Thanks,
Robb...
I just need some help here and
> then I will be on my way. If you could just tell me how to add a new
> model that would be great: Like what files I need to edit, etc.
> thanks once again
> Jason
>
>
> ______________________________ Reply Separator
> _________________________________
> Subject: Re: Re[6]: 19990120: Help with decoders!
> Author: address@hidden at EXTERNAL
> Date: 1/29/1999 3:44 PM
>
>
> On 29 Jan 1999, Jason Burks wrote:
>
> >
> > Robb,
> > Sorry about all of the questions
> > I am now trying to decode the Navy's NOGAPS model data supplied in
> > GRIB into netcdf format.
> Jason,
>
> Contact Navy's NOGAPS people to see what they use to read there own grib
> files. Also try to find out what is the model structure of NOGAPS. I
> believe that gribtonc will have to be modified to translate these type of
> grids.
>
>
> When I tried to use gribdump -h or grib -b, I
> > get nothing. When I use gribdump -v on the file I get messages like
> > the following saying:
> > oversize GRIB product
> > error reading GRIB product
> > It exits saying 0 WMO Msgs, 0 GRIBs decoded, 0 written
> > is this because the the nogaps is not described anywhere in the
> > program? What do I need to do to get it to work? The data is on a
> > standard grid, I think 207. Thanks for all of your help, and sorry to
> > take your time.
>
>
> In file gdes.c at 1356 there is a definition for grid 207, does this match
> the params of the raw file. At this point a debugger would surely pinpoint
> the problem. The gribtonc program is tailored to FOS/NOAAport types of
> products, it's not a general translator.
>
>
> Here's a url to another grib reader, maybe it will work better:
>
> http://wesley.wwb.noaa.gov/wgrib.html
>
>
>
> Robb...
>
>
> > Jason
> >
>
> ===============================================================================
>
> Robb Kambic Unidata Program Center
> Software Engineer III Univ. Corp for Atmospheric
> Research
> address@hidden WWW: http://www.unidata.ucar.edu/
> ===============================================================================
>
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================