<div dir="ltr">Walter,<div><br></div><div>I'm not sure of the version you are running, but NCL 6.3.0 generally doesn't produce any such errors for me when I process real-time GFS files (including GFS analysis, I believe). I did see similar warnings in versions of NCL prior to 6.3.0 and after the January upgrade of the GFS changed a number of different things. Each version usually includes a fresh set of GRIB tables, so even if you can't/don't want to update NCL (probably the easiest solution), you should be able to at least grab the updated tables from a new version.</div><div><br></div><div><br></div><div>Kyle</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr">----------------------------------------<div>Kyle S. Griffin</div><div>Department of Atmospheric and Oceanic Sciences</div><div>University of Wisconsin - Madison</div><div>Room 1421</div><div>1225 W Dayton St, Madison, WI 53706</div><div>Email: <a href="mailto:ksgriffin2@wisc.edu" target="_blank">ksgriffin2@wisc.edu</a></div></div></div></div>
<br><div class="gmail_quote">On Thu, Jun 25, 2015 at 5:41 PM, David Brown <span dir="ltr"><<a href="mailto:dbrown@ucar.edu" target="_blank">dbrown@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Walter,<br>
Well the GFS analysis is not static. New parameters are added from<br>
time to time. NCEP updates their GRIB tables as the need arises as<br>
well. The tables that NCL uses are updated periodically to incorporate<br>
changes that NCEP makes, but there is necessarily a lag since for now<br>
at least this is a manual process.<br>
In this case, the message about parameter 191 in NCEP table 133 does<br>
indicate a new parameter that NCL has not yet incorporated. For the<br>
record, the docs<br>
(<a href="http://www.nco.ncep.noaa.gov/pmb/docs/on388/table2.html#TABLE133" rel="noreferrer" target="_blank">http://www.nco.ncep.noaa.gov/pmb/docs/on388/table2.html#TABLE133</a>) say<br>
this parameter represents "Sunshine Duration" with units of seconds.<br>
The other messages document a record in the file that will never have<br>
a name. GRIB 1 generally uses the number 255 to mean "missing". So in<br>
this case there is both a table with the "missing" designation and in<br>
that table there is a parameter that is "missing". I have no idea what<br>
this record is supposed to represent or why it appears. NCL is just<br>
letting you know about it. Perhaps the GFS folks could explain its<br>
purpose.<br>
-dave<br>
<div><div class="h5"><br>
On Thu, Jun 25, 2015 at 3:51 PM, Walter Hannah <<a href="mailto:walter@hannahlab.org">walter@hannahlab.org</a>> wrote:<br>
> Hi,<br>
><br>
> I downloaded some analysis data from the NOMADS server, specifically:<br>
><br>
> <a href="http://nomads.ncdc.noaa.gov/data/gfsanl/" rel="noreferrer" target="_blank">http://nomads.ncdc.noaa.gov/data/gfsanl/</a><br>
><br>
> But when I try to read the files with NCL, I get this message:<br>
><br>
> warning:NclGRIB: Unrecognized parameter table (center 7, subcenter 0, table<br>
> 255), defaulting to NCEP operational table: variable names and units may be<br>
> incorrect<br>
> warning:NclGRIB: Unknown grib parameter number detected (255, center 7,<br>
> table version 255 grib record 3), using default variable name (VAR_255)<br>
> warning:NclGRIB: Unknown grib parameter number detected (191, center 7,<br>
> table version 133 grib record 240), using default variable name (VAR_191)<br>
><br>
> Looking at some previous ncl-talk tthreads, I think I understand the issue,<br>
> but I'm confused that the GFS analysis wouldn't be consistent with the<br>
> default NCEP grib tables.<br>
><br>
> Can anyone shed some light on what's going on here?<br>
><br>
> Thanks,<br>
> Walter<br>
><br>
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