[gradsusr] GRIB-1/GrADS Diagnosis

[Jeff Duda]

Aaron,
I guess my first question is why does your control file have only 5 VAR
entries? I downloaded the same file and ran grib2ctl.pl on it and the var
list has 133 entries in the control file I got. Check your file size. On
the NOMADS site the file has a size of 115 MB. If yours is substantially
smaller, it could mean there was an error while downloading the file.

I don't generally use the file meso-eta-hi because I'm not sure what it
means, but what's weird is the contents are identical to those in the nam
directory, which I assume is 12 km NAM output.

Also, I see from your dset entry your file name is different than that on
the NOMADS server. How and why did it get changed? It's possible if someone
else had the file before you they may have manipulated it, and that may
cause the trouble.

Jeff


On Thu, Apr 23, 2015 at 12:10 PM, Perry, Aaron <Aaron.Perry at lsc.vsc.edu>
wrote:

> Hi Jeff,
>
> I'm currently using the data locating in the following directory:
>
> http://nomads.ncdc.noaa.gov/data/meso-eta-hi/201412/20141207/
>
> Aaron D. Perry
> Dept. of Atmospheric Sciences
> Class of 2016
> Lyndon State College
> Lyndonville, VT
> Twitter: @AaronPerryLSC
> Mobile: 617-780-4312
> Web: shearanalytics.net
> Email: Aaron.Perry at lyndonstate.edu
>
> ________________________________________
> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] on
> behalf of Jeff Duda [jeffduda319 at gmail.com]
> Sent: Thursday, April 23, 2015 1:00 PM
> To: GrADS Users Forum
> Subject: Re: [gradsusr] GRIB-1/GrADS Diagnosis
>
> Exactly which NAM data are you obtaining? Give a URL.
>
> On Thu, Apr 23, 2015 at 11:11 AM, Perry, Aaron <Aaron.Perry at lsc.vsc.edu
> <mailto:Aaron.Perry at lsc.vsc.edu>> wrote:
>
> Hi All,
>
>
> I'm currently having an issue with getting GRIB-1 data to be processed in
> GrADS. I'm using archived 12km NAM data from the NCDC NOMADS Server. I get
> the "Constant field.  Value = 0" error...
>
>
> Below is the control file that I've created using grib2ctl:
>
>
> dset /mnt/homes/perrya/jaycasestudy/data/nam/nam12.2014120700.%f3.grb
> index /mnt/homes/perrya/jaycasestudy/data/nam/nam12.2014120700.000.grb.idx
> undef 9.999E+20
> title /mnt/homes/perrya/jaycasestudy/data/nam/nam12.2014120700.000.grb
> *  produced by grib2ctl v0.9.13
> * command line options: -verf
> /mnt/homes/perrya/jaycasestudy/data/nam/nam12.2014120700.%f3.grb
> dtype grib 218
> options template
> pdef 614 428 lccr 12.190000 -133.459000 1 1 25.000000 25.000000 -95.000000
> 12191 12191
> xdef 614 linear -133.459000 0.113383763365335
> ydef 428 linear 12.190000 0.110827272727273
> tdef 29 linear 00Z07dec2014 3hr
> zdef 1 linear 1 1
> vars 5
> APCPsfc  0 61,1,0  ** surface Total precipitation [kg/m^2]
> PRMSLmsl  0 2,102,0 ** mean-sea level Pressure reduced to MSL [Pa]
> TMP2m  0 11,105,2 ** 2 m above ground Temp. [K]
> UGRD10m  0 33,105,10 ** 10 m above ground u wind [m/s]
> VGRD10m  0 34,105,10 ** 10 m above ground v wind [m/s]
> ENDVARS
>
>
> What am I doing wrong?
>
> Aaron D. Perry
> Dept. of Atmospheric Sciences
> Class of 2016
> Lyndon State College
> Lyndonville, VT
> Twitter: <https://twitter.com/AaronPerryLSC> <
> https://www.twitter.com/AaronPerryLSC> @AaronPerryLSC<
> https://twitter.com/AaronPerryLSC>
> Mobile: 617-780-4312
> Web: shearanalytics.net<http://shearanalytics.net/>
> Email: Aaron.Perry at lyndonstate.edu<http://Aaron.Perry@lyndonstate.edu>
>
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>
>
>
>
> --
> Jeff Duda
> Graduate research assistant
> University of Oklahoma School of Meteorology
> Center for Analysis and Prediction of Storms
>
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>



-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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