<div dir="ltr">Hi Matt,<div>Thanks for sending your complete code along with a pointer to the file. I was able to read your file into NCL v6.2.1 and v6.3.0 here, so I would suggest making sure you downloaded the entire file and/or redownload the file. Here's what I did:</div><div><br></div><div>a = addfile("Downloads/rap_130_20150706_0000_000.grb2","r")</div><div>varnames = getfilevarnames(a)<br></div><div>print(varnames)</div><div><br></div><div><div>Variable: varnames</div><div>Type: string</div><div>Total Size: 816 bytes</div><div> 102 values</div><div>Number of Dimensions: 1</div><div>Dimensions and sizes:<span class="" style="white-space:pre"> </span>[102]</div><div>Coordinates: </div><div>(0)<span class="" style="white-space:pre"> </span>TMP_P0_L1_GLC0</div><div>(1)<span class="" style="white-space:pre"> </span>TMP_P0_L7_GLC0</div><div>(2)<span class="" style="white-space:pre"> </span>TMP_P0_L100_GLC0</div><div>(3)<span class="" style="white-space:pre"> </span>TMP_P0_L103_GLC0</div><div>(4)<span class="" style="white-space:pre"> </span>TMP_P0_2L108_GLC0</div><div>(5)<span class="" style="white-space:pre"> </span>POT_P0_L7_GLC0</div><div>(6)<span class="" style="white-space:pre"> </span>POT_P0_L103_GLC0</div><div>(7)<span class="" style="white-space:pre"> </span>EPOT_P0_L1_GLC0</div><div>(8)<span class="" style="white-space:pre"> </span>DPT_P0_L103_GLC0</div><div>(9)<span class="" style="white-space:pre"> </span>DEPR_P0_L103_GLC0</div><div>(10)<span class="" style="white-space:pre"> </span>SPFH_P0_L103_GLC0</div><div>(11)<span class="" style="white-space:pre"> </span>RH_P0_L4_GLC0</div></div><div>.....</div><div><br></div><div><br></div><div>I searched the NCL website for "RUC" and got pointed to skewt example #6 here:</div><div><a href="http://www.ncl.ucar.edu/Applications/skewt.shtml#ex6">http://www.ncl.ucar.edu/Applications/skewt.shtml#ex6</a><br></div><div><br></div><div>Looking at that code, they add a setfileoption:</div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">setfileoption("grb","SingleElementDimensions","Initial_time")</pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"><br></pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"><font face="arial, helvetica, sans-serif">As you can see I did not need that setfileoption to open the file correctly, but perhaps for some reason your set up does?</font></pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"><span style="font-family:arial,helvetica,sans-serif">Hope that helps, if you continue to have trouble with the file let the ncl-talk email list know. </span><br></pre><pre style="word-wrap:break-word"><span style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;white-space:pre-wrap">Adam</span><br></pre></div><div><br></div><div><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 4, 2015 at 8:56 AM, Matt Flournoy <span dir="ltr"><<a href="mailto:mflournoy37@gmail.com" target="_blank">mflournoy37@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span style="font-size:13px">Hi all,</span><div style="font-size:13px"><br></div><div style="font-size:13px">Does anyone have experience reading RUC GRIB2 files? I'm trying to read GRIB2 output from 13km RUC model data, which is available on the NOMADS site (<a href="http://nomads.ncdc.noaa.gov/data.php#hires_weather_datasets" target="_blank">http://nomads.ncdc.noaa.gov/data.php#hires_weather_datasets</a>). Specifically, I am trying to read files from 06 July 2015, but I suspect this problem is universal among at least all of the 13km RUC GRIB2 output files.</div><div style="font-size:13px"><br></div><div style="font-size:13px">I've tried a couple ways to read the GRIB2 data, including reading the GRIB2 file and also trying to convert the GRIB2 file to netcdf. When I try to read the GRIB2 data directly (specifically "rap_130_20150706_0000_000.grb2"), I get the following warning message:</div><div style="font-size:13px"><br></div><div style="font-size:13px"><div>warning:getfilevarnames: rap_130_20150706_0000_000 contains no variables readable by NCL</div><div><br></div><div>I've pasted my NCL script that yields this warning at the bottom of my message.</div><div><br></div><div>Second, when I try to convert the GRIB2 file to netcdf using "ncl_convert2nc" in the command line, I get this similar warning:</div><div><br></div><div><div>warning:getfilevarnames: rap_130_20150706_0000_000 contains no variables readable by NCL</div><div>./rap_130_20150706_0000_000.grb2 contains no variables readable by NCL: converting global attributes only</div></div><div><br></div><div>Then, when I "ncl_filedump" the created netcdf file, I get this:</div><div><br></div><div><div>Variable: f</div><div>Type: file</div><div>filename:<span style="white-space:pre-wrap"> </span>rap_130_20150706_0000_000</div><div>path:<span style="white-space:pre-wrap"> </span><a href="http://rap_130_20150706_0000_000.nc" target="_blank">rap_130_20150706_0000_000.nc</a></div><div> file global attributes:</div><div> creation_date : Fri Sep 4 09:52:47 CDT 2015</div><div> NCL_Version : 6.2.1</div><div> system : Linux bigbang.protect.nssl 2.6.32-504.12.2.el6.x86_64 #1 SMP Sun Feb 1 12:14:02 EST 2015 x86_64 x86_64 x86_64 GNU/Linux</div><div> Conventions : None</div><div> grib_source : rap_130_20150706_0000_000.grb2</div><div> title : NCL: convert-GRIB-to-netCDF</div><div> dimensions:</div><div> variables:</div></div><div><br></div></div><div style="font-size:13px">Do you know how to address this issue? I am currently using NCL version 6.2.1 on bigbang, and this problem also appears in other NCL versions.</div><div style="font-size:13px"><br></div><div style="font-size:13px">Thank you,</div><div style="font-size:13px">Matt </div><div style="font-size:13px"><br></div><div style="font-size:13px"><br></div><div style="font-size:13px"><br></div><div style="font-size:13px">------------ begin NCL script ---------------</div><div style="font-size:13px"><br></div><div style="font-size:13px"><div>;******************************************************************************;</div><div>; Load libraries.</div><div>;******************************************************************************;</div><div><br></div><div>load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"</div><div>load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"</div><div>load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"</div><div>load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl"</div><div><br></div><div>;-----------------------------------------------------------------------------;</div><div>; Synoptic overview plots of the July 06 2015 case from the RUC.</div><div>;-----------------------------------------------------------------------------;</div><div><br></div><div>begin</div><div><br></div><div> ruc_filepath = ("/home/matt.flournoy/PECAN/overview/data/RUC_data/rap_130_20150706_0000_000.grb2")</div><div> ruc_file = addfile(ruc_filepath,"r")</div><div><br></div><div> varnames = getfilevarnames(ruc_file)</div><div><br></div><div> if(.not.any(ismissing(varnames))) then</div><div><br></div><div> do i=0,dimsizes(varnames)-1</div><div><br></div><div> printFileVarSummary(ruc_file,varnames(i))</div><div><br></div><div> end do</div><div><br></div><div> end if</div><div><br></div><div>end</div><div><br></div><div>--------------- end NCL script ----------------</div></div><span class="HOEnZb"><font color="#888888"><div><br></div>-- <br><div><div dir="ltr">Matthew Flournoy<div>M.S. Meteorology Candidate, University of Oklahoma</div><div>B.S. Meteorology, Penn State University</div></div></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div><span><font color="#888888">Adam Phillips <br></font></span></div><span><font color="#888888">Associate Scientist, </font></span><span><font color="#888888">Climate and Global Dynamics Laboratory, NCAR<br></font></span></div></div><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli/" target="_blank">www.cgd.ucar.edu/staff/asphilli/</a> </font></span><span><font color="#888888">303-497-1726 </font></span></div><span><font color="#888888"></font></span><div><div><span><font color="#888888"><br></font></span><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli" target="_blank"></a></font></span></div></div></div></div></div></div></div></div></div></div></div>
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