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Hi Diane,<br><br>This is a new attempt at downloading gfs and creating text file output - so I cannot say it worked for me before: however, I have used a similar way (cat the files, create .ctl and idx files) to create graphical (not text) output using GrADS from wrf modeling. The one difference is that the wrf I use only forecasts out to 48 hours, not 120.<br><br>I use gribmaster to download full gfs004grb2 3-hourly 0.5 deg files from f0 to f120 from the NCEP server.<br><br>I then concatenate the files together using "cat" into one large file of 2.2 Gig:<br>cat *pgrb2*>>gfsbig<br><br>Then create .ctl and .idx using:<br>./g2ctl -verf gfsbig >gfsgrads.ctl<br>gribmap -v -i gfsgrads.ctl<br><br>(Running gribmap manually shows a "Match" in every instance)<br><br>My created .ctl file shows:<br>dtype grib2<br>ydef 361 linear -90.000000 0.5<br>xdef 720 linear 0.000000 0.500000<br>tdef 41 linear 18Z24may2012 3hr<br><br>And from within grads:<br>"q file 1" gives: Xsize = 720 Ysize = 361 Zsize = 26 Tsize = 41 Esize = 1<br><br>So all the times appear to be available.<br><br>My hardware environment is 5.8GiB Ram and 4 processors Xeon E5520@2.27GHz allocated.<br>My software environment is Scientific Linux 6.2_64 in a virtual machine (Basically same as Enterprise Linux). <br>Grads Version 2.0.a9 from the EPEL repository and wgrib2 from the same. Built Fri Sep 3 17:16:06 UTC 2010 for x86_64-redhat-linux-gnu/<br><br>q config reveals:<br>This version of GrADS has been configured with the following options:<br> o Built on a LITTLE ENDIAN machine<br> o Athena Widget GUI DISABLED<br> o Command line editing ENABLED <br> o printim command for image output ENABLED <br> o GRIB2 interface ENABLED <br> o NetCDF interface ENABLED <br> netcdf 4.1.1 of Dec 27 2010 21:12:42 $ <br> o OPeNDAP gridded data interface ENABLED<br> o OPeNDAP station data interface DISABLED<br> o HDF4 and HDF5 interfaces
ENABLED <br> HDF 4.2r5 <br> HDF5 1.8.5 <br> o GeoTIFF and KML/TIFF output ENABLED<br> o KML contour output ENABLED<br> o Shapefile interface ENABLED<br><br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">Date: Fri, 25 May 2012 09:50:56 -0400<br>From: diane.stokes@noaa.gov<br>To: gradsusr@gradsusr.org<br>Subject: Re: [gradsusr] Error plotting full 120 hour GFS forecast, stops working after t30<br><br>
Theo,<br>
<br>
Answers to the following questions may help the forum point you in
the right direction.<br>
<br>
What is the source of your data?<br>
Are you using the template option to read a series of files, or are
you reading one large file?<br>
Did the same request work for you for GFS runs prior to 20120522?<br>
What version of GrADS are you running? (Please provide output from
'q config')<br>
<br>
Regards,<br>
Diane Stokes<br>
<br>
<br>
On 5/25/2012 12:23 AM, Theo Carter wrote:
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Hi All,<br>
<br>
I am trying to plot a variable using 120 hours of a GFS run, but
for some reason I cannot plot past T30 (T41 being 120 hours).
Everything plots fine up to that point, but anything past T30
crashes out with the GRIB2 I/O error specified below.<br>
<br>
Has anyone else come across this?<br>
Cheers,<br>
Theo<br>
<br>
<br>
<br>
ga-> set t 1 41<br>
Time values set: 2012:5:24:18 2012:5:29:18 <br>
ga-> d tmpsfc<br>
GRIB2 I/O error: fseeko failed <br>
Data Request Error: Error for variable 'tmpsfc'<br>
Error ocurred at column 1<br>
DISPLAY error: Invalid expression <br>
Expression = tmpsfc<br>
ga-> c<br>
ga-> set t 1 30<br>
Time values set: 2012:5:24:18 2012:5:28:9 <br>
ga-> d tmax2m<br>
ga-> d tmp2m<br>
ga-> <br>
<br>
<br>
<br>
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<br>
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