<div dir="ltr"><div>Jim<br><br></div>NCL 6.3.0 handles the WRF grib2 file just fine [well, 99%]. <br><br>%> <b>ncl_filedump</b> 1807190600_wrfout_arw_d02.grb2 <b>| less</b><br><div><br></div><div>There is only <b>one initial time</b> and <b>one forecast time</b> on the file. If you want single dimension included in the dimensioning:<br><br>%> <b>ncl_filedump</b> 1807190600_wrfout_arw_d02.grb2 <b>-itime</b> <b>-ftime</b> <b>| less</b><br><br>%> <b>ncl_filedump</b> 1807190600_wrfout_arw_d02.grb2 <b>-itime</b> <b>-ftime</b> >&! out.<b>630_itime_ftime</b>.1807190600_wrfout<wbr>_arw_d02<br><br></div><div>Within an NCL script: <a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/setfileoption.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/setfileoption.shtml</a><br><br> <b>setfileoption</b>("grb","SingleEle<wbr>mentDimensions","Initial_time"<wbr>)<br></div><div>or<br> <b>setfileoption</b>("grb","SingleEle<wbr>mentDimensions", (/"Initial_time","Forecast<wbr>_time"/))<br><br></div><div><br>===<br></div><div>I have also tried the recently released 6.5.0<br><br></div><div>You get the exact same result.<br><br>===<br></div><div>NOTE:<br></div><div><br></div><div><br>[a] Some of the descriptive attributes:<br><br> float <b>REFC_P8_L10_GLC0_max30min</b> ( initial_time0_hours, ygrid_0, xgrid_0 )<br> center : US National Weather Service - NCEP (WMC)<br> production_status : Operational products<br> long_name : Composite reflectivity<br> units : dB<br> _FillValue : 1e+20<br> coordinates : gridlat_0 gridlon_0<br> grid_type : Lambert Conformal can be secant or tangent, conical or bipolar<br> parameter_discipline_and_categ<wbr>ory : Meteorological products, Forecast radar imagery<br> parameter_template_discipline_<wbr>category_number : ( 8, 0, 16, 5 )<br> level_type : Entire Atmosphere<br> level : 0<br><b> type_of_statistical_processing : Maximum<br> statistical_process_duration : 30 minutes (ending at forecast time)</b><br> forecast_time : 780<br> forecast_time_units : minutes<br><br></div><div>[b] <b>Warning messages<br><br></b></div><div><b>The variables are unpacked correctly!!<br><br></b></div><div>NCL uses look-up tables to match-up parameter id numbers with information such as lon_name, units, etc.<br></div><div>Unfortunately, GRIB is a moving target and NCL developers are not privy to information or it is just not publicly available.<br><br></div><div>So, for example:<br></div><div><br><b>warning: Entry (243)</b> not found in code table file /Users/shea/devel/ncl/lib/ncarg/grib2_codetables/ncep/4/4.2.0.1.table<br></div><div>NCL unpacks the variables and creates the appropriate dimension names. It just does not have the needed lookup info.<br></div><div><br> float <b>VAR</b>_0_1_<b>243</b>_P0_L1_GLC0 ( initial_time0_hours, ygrid_0, xgrid_0 )<br> center : US National Weather Service - NCEP (WMC)<br> production_status : Operational products<br> long_name : unknown variable name<br> units : unknown<br> _FillValue : 1e+20<br> coordinates : gridlat_0 gridlon_0<br> grid_type : Lambert Conformal can be secant or tangent, conical or bipolar<br> parameter_discipline_and_<wbr>category : <b>Meteorological products, Moisture</b><br> parameter_template_discipline_<wbr>category_number : ( 0, 0, 1, 243 )<br> level_type : <b> Ground or water surface</b><br> level : 0<br> forecast_time : 780<br> forecast_time_units : minutes<br><br></div><div>HTH<br></div><div>D<br></div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 19, 2018 at 2:26 PM, Jim Means <span dir="ltr"><<a href="mailto:jim@weatherextreme.com" target="_blank">jim@weatherextreme.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>Hello,</p>
<p>I am trying to find out what's inside a grib2 file created by
WRF, and I'm attempting to use ncl_filedump to find out the
details. I'm running ncl_filedump with no options:</p>
<p>ncl_filedump 1807190600_wrfout_arw_d02.grb2<br>
</p>
<p>and I get</p>
<p>fatal:NclGRIB2: Invalid Product Definition Template.<br>
<br>
Variable: f<br>
Type: file<br>
(0) File Missing Value : -1<br>
<br>
</p>
<p>What am I doing wrong?</p>
<p><br>
</p>
<p>Thanks,</p>
<p>Jim<span class="HOEnZb"><font color="#888888"><br>
</font></span></p><span class="HOEnZb"><font color="#888888">
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