Hello,<div><br></div><div>I am using GrADS Version 2.0.a9 on a <span style="background-color:rgb(255,255,255);font-family:Arial,Helvetica,sans-serif;font-size:13px">Linux machine.</span></div><div><font face="Arial, Helvetica, sans-serif"><br>
</font></div><div><div style><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">I have used g2ctl (GRIB 1 version) to convert NAM 12km GRIB 1 files to .ctl files to be read into GrADS. The 00hr and 06hr forecasts from the 00Z and 06Z runs on August 27, 2011 (available here: </span><a href="http://nomads.ncdc.noaa.gov/data/meso-eta-hi/201108/20110827/" target="_blank" style="color:rgb(17,85,204);font-family:arial,sans-serif;font-size:13px">http://nomads.ncdc.noaa.gov/data/meso-eta-hi/201108/20110827/</a>) <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">are successfully converted and plotted, but the 09hr forecast and beyond are converted but create -9.99e+08's throughout all variables within the .ctl file.</span></div>
<div style><br></div><div style>I do not know if this is a g2ctl problem or if this is a problem with "empty" data files on the NOMADS server. I do a wgrib on the NAM GRIB 1 files and cannot see any problems as far as I know.</div>
<div style><br></div><div style>This may be a NOMADS data problem, but I have contacted them multiple times with no reply. It may also be a g2ctl issue, but I figured I may be able to gain some help from this GrADS Users Forum. Has anyone encountered a similar issue? See details below.</div>
<div style><br></div><div style>Thank you for your help,</div><div style>Greg</div><div style><br></div><div style>_____</div><div style><br></div><div style>This is an example listing of the .ctl, .grb, and .idx files that I use to read into GrADS:</div>
<div style><br></div><div style><div><font color="#222222" face="arial, sans-serif">nam_218_20110827_0600_048.ctl</font></div><div><font color="#222222" face="arial, sans-serif">nam_218_20110827_0600_048.grb</font></div><div>
<font color="#222222" face="arial, sans-serif">nam_218_20110827_0600_048.grb.idx</font></div></div><div><br></div><div>When I run GrADS and open the .ctl file, set gxout print, and try to display a variable (msletmsl shown here), I get all Undefined values (-9.99e+08):</div>
<div><br></div><div><div>Grid Analysis and Display System (GrADS) Version 2.0.a9</div><div>Copyright (c) 1988-2010 by Brian Doty and the</div><div>Institute for Global Environment and Society (IGES)</div><div>GrADS comes with ABSOLUTELY NO WARRANTY</div>
<div>See file COPYRIGHT for more information</div><div><br></div><div>Config: v2.0.a9 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn geotiff shapefile</div><div>Issue 'q config' command for more detailed configuration information</div>
<div>Landscape mode? ('n' for portrait): </div><div>GX Package Initialization: Size = 11 8.5 </div><div>ga-> open nam_218_20110827_0600_048.ctl </div><div>Scanning description file: nam_218_20110827_0600_048.ctl</div>
<div>Data file /home/seroka/data/NAM/nam_218_20110827_0600_048.grb is open as file 1</div><div>LON set to -133.459 -63.9548 </div><div>LAT set to 12.19 59.5132 </div><div>LEV set to 1000 1000 </div><div>Time values set: 2011:8:27:6 2011:8:27:6 </div>
<div>E set to 1 1 </div><div>Notice: Implied interpolation for file nam_218_20110827_0600_048.ctl</div><div> Interpolation will be performed on any data displayed from this file</div><div>ga-> set gxout print</div><div>
ga-> d msletmsl</div><div>Notice: Automatic Grid Interpolation Taking Place</div><div>Printing Grid -- 262792 Values -- Undef = -9.99e+08</div><div>-9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 </div>
</div><div>-9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 </div><div>-9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 -9.99e+08 </div><div>...........</div><div>........</div>
<div><br></div><div><font face="Arial, Helvetica, sans-serif"><br></font></div><div><br>-- <br>Greg Seroka<div>Ph.D. Student</div><div>Coastal Ocean Observation Lab</div><div>Institute of Marine and Coastal Sciences</div>
<div>Rutgers University</div><div>Email: <a href="mailto:seroka@marine.rutgers.edu" target="_blank">seroka@marine.rutgers.edu</a></div><br>
</div></div>