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Hi Herb,<br>
<br>
You'll need to generate a data descriptor file for this. Note that
this model output<br>
is on a rectilinear grid (lat/lon) and sigma-coordinate (vertical),
so even with a <br>
descriptor file you will need to make some approximations. On the
plus side you<br>
should be able to use the template option to get time-series if
needed.<br>
<br>
Jim<br>
<br>
Let me know if you need more details.<br>
<div class="moz-cite-prefix">On 9/16/14 9:27 AM, Philbrick, Herb
wrote:<br>
</div>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to access CO-OPS Great Lakes
Operational Forecast System, GLOFS, datasets using GrADS.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have never worked with netcdf files. <o:p></o:p></p>
<p class="MsoNormal">Nor have I worked with a THREDDS server.<o:p></o:p></p>
<p class="MsoNormal">I often access NOMADS through its OpenDAP
server using GrADS on my PC. The GrADS command is like<o:p></o:p></p>
<p class="MsoNormal"> <span
style="font-size:8.0pt;font-family:"Courier New"">
Sdfopen
<a class="moz-txt-link-freetext" href="http://nomads.ncep.noaa.gov:9090/dods/rap/rap20140915/rap_00z">http://nomads.ncep.noaa.gov:9090/dods/rap/rap20140915/rap_00z</a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have tried the following in GrADS
(grads.exe – opendap enabled (see the PS))<o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New""> Sdfopen
<a class="moz-txt-link-freetext" href="http://opendap.co-ops.nos.noaa.gov/thredds/wms/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc">http://opendap.co-ops.nos.noaa.gov/thredds/wms/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc</a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">GrADS returns the following message in the
GrADS console:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">Scanning
self-describing file:
<a class="moz-txt-link-freetext" href="http://opendap.co-ops.nos.noaa.gov/thredds/dodsC">http://opendap.co-ops.nos.noaa.gov/thredds/dodsC</a><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t20z.nc<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">nc_open
failure:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">No
such file or directory<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New""><a class="moz-txt-link-freetext" href="http://opendap.co-ops.nos.noaa.gov/thredds/dodsC/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc">http://opendap.co-ops.nos.noaa.gov/thredds/dodsC/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc</a>
does not exist or is not a netCDF file.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">Couldn't
ingest SDF metadata.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">If
this was an HDF-SDS file, try gradshdf.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I downloaded the nc file to my PC
c:\grads19\win32\ sub-directory.
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">ga->
sdfopen glofs.lmofs.fields.nowcast.20140915.t19z.nc<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">Scanning
self-describing file:
glofs.lmofs.fields.nowcast.20140915.t19z.nc<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">SDF
file has no discernable X coordinate.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span
style="font-size:8.0pt;font-family:"Courier New"">ga-><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">ncdump on the <u>downloaded</u> file DID
obtain sensible information for header, variables values, etc.<o:p></o:p></p>
<p class="MsoNormal">The <u>downloaded</u> file can be loaded
into Excel using the NetCDF add-in.<o:p></o:p></p>
<p class="MsoNormal"> Hence, the downloaded file
sure seems to be good.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The folks at CO-OPS do not use GrADS and
could not furnish advice.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can you give me the proper command or
settings to use to access LMOFS datasets?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Thanks
in advance,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Herb
Philbrick
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">PS
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">I
am using Grads19 because, ultimately, I output grib-1
files.
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">ga->
q config<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">Config:
v1.9.0-rc1 32-bit little-endian readline sdf/xdf netcdf dap
dap-stn lats<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">athena
printim<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">Grid
Analysis and Display System (GrADS) Version 1.9.0-rc1<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">Copyright
(c) 1988-2005 by Brian Doty and IGES<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">Center
for Ocean-Land-Atmosphere Studies (COLA)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">Institute
for Global Environment and Society (IGES)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">This
program is distributed WITHOUT ANY WARRANTY<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">See
file COPYRIGHT for more information.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">Built
Fri Jan 25 02:30:31 EST 2008 for i686-pc-cygwin<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">This
version of GrADS has been configured with the following
options:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o This is a 32-bit LITTLE ENDIAN machine version.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o Command line editing (readline) ENABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o CIRES/CDC (<a class="moz-txt-link-freetext" href="http://www.cdc.noaa.gov">http://www.cdc.noaa.gov</a>) SDF/XDF interface
ENABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
Use sdfopen/xdfopen to read NetCDF files.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o DTYPE netcdf is ENABLED; DTYPE hdfsds is DISABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o OPeNDAP (a.k.a. DODS) gridded data interface ENABLED.
(<a class="moz-txt-link-freetext" href="http://opendap.org">http://opendap.org</a>)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
This version is configured to access gridded data on OPeNDAP
servers<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
via the sdfopen or xdfopen commands, or using DTYPE netcdf.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o OPeNDAP (a.k.a. DODS) station data interface (gadap)
ENABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
This version is configured to access station data on OPeNDAP
servers<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
via the open command.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o PCMDI (<a class="moz-txt-link-freetext" href="http://www-pcmdi.llnl.gov">http://www-pcmdi.llnl.gov</a>) LATS interface ENABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
This version is configured to write GRIB and NetCDF files.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o DAO (<a class="moz-txt-link-freetext" href="http://dao.gsfc.nasa.gov">http://dao.gsfc.nasa.gov</a>) Athena Widget GUI ENABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o NRL/DAO/PCMDI XA or ImageMagick Image Output DISABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
o printim command for direct png/gif output ENABLED.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">
(via the GD Library -- <a class="moz-txt-link-freetext" href="http://www.boutell.com/gd">http://www.boutell.com/gd</a>)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Courier New"">For
additional information please consult
<a class="moz-txt-link-freetext" href="http://grads.iges.org/grads/">http://grads.iges.org/grads/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">ga-><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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