Thank you everyone for getting back to me.
My apologies for not including the location of my data. I downloaded it
from http://nomads.ncdc.noaa.gov/data/rucanl/ for the appropriate date and
time. Let me respond to everyone's suggestions.
1. When I run:
od -c ruc2anl_130_20090605_2200_000.grb | less
I get output:
0000000 051107 041111 075003 000752 000000 001034 064407 100202
0000020 062007 164003 003011 013005 000400 000000 000001 000000
0000040 000025 000400 000000 000052 001777 141401 050401 037400
0000060 100631 135354 100410 014163 032000 000351 164464 040000, etc.
2. When I run:
I get output:
3. When I run:
wgrib -v ruc2anl_130_20090605_2200_000.grb
I get similar output:
1:0:D=2009060522:HGT:1000 mb:kpds=7,100,1000:anl:winds in grid
direction:"Geopotential height [gpm]
4. George, you mentioned that "It is possible that the program does not
know about GRIB2 fields, specific to the office that created the file." By
program, are you referring to the program I am using to process these
data? Or are you referring to another program? I am not able to test the
wgrib2 command at the moment because I do not have the permissions to
install it (my advisor will have to do that).
It appears that wgrib at least recognizes the *.grb file. Are the lists of
the grids as they should be? Perhaps something small is getting lost in
the conversion process that my processing code (using Warning Decision
Support System - Integrated Information algorithms) cannot reconcile?
Thank you for the continued help!
Michelle M. Serino
Texas A&M University
Atmospheric Sciences Dept.
Eller O&M, Suite 1017
College Station, TX 77843
On Mon, Apr 18, 2016 at 1:52 AM, Michael Dross <mdross@xxxxxxxxxxxxxxxxxx>
> If you have wgrib installed do a
> wgrib -v ruc2anl_130_20090605_2200_000.grb
> If it converted it correctly you should get a listing of the grids. If
> not, something is amiss with the cnvgrib you have.
> - Mike
> Sent from my iPad
> On Apr 17, 2016, at 9:11 PM, Michelle Serino <mmserino@xxxxxxxx> wrote:
> Hi all,
> I am using NCAR's cnvgrib utility to convert grib2 RUC-Analysis data to
> grib1. An example of one of these data files is below:
> When I run the command,
> -g21 ruc2anl_130_20090605_2200_000.grb2 ruc2anl_130_20090605_2200_000.grb
> the converting process seems to work. I get a file with an extension of
> "grb." However, while the file type is listed as a data file, it appears
> green, as an executable file. In addition, the code I am using does not
> recognize the file as a grb1 file. (The code only recognizes grb1 files.)
> The website to which I referred to use this utility (
> http://blog.nssl.noaa.gov/wdssii/) did not list any additional options to
> use besides the required '-g21.' Am I missing something? This is my first
> implementation of the cnvgrib utility, so I apologize if I have made a
> naive mistake. I appreciate any help.
> Best regards,
> Michelle Serino
> Michelle M. Serino
> M.S. Candidate
> Texas A&M University
> Atmospheric Sciences Dept.
> Eller O&M, Suite 1017
> College Station, TX 77843
> (484) 769-0949
> ldm-users mailing list
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