<div dir="ltr"><div class="gmail_default" style="font-size:small">Michael and Guido,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default">I believe the issue is that NCL doesn't currently handle unstructured data in GRIB2 files. We already have a ticket open on this, NCL-2263, and I've added your email to the comments, since you provided an excellent source of data that we can download for testing.</div><div class="gmail_default"><br></div><div class="gmail_default">Guido, I was able to do an ncl_filedump on the file as well, but I got a fatal error, and also what looks like incomplete information. Are you seeing something different?</div><div class="gmail_default"><font face="monospace, monospace"><br></font></div><div class="gmail_default"><div class="gmail_default"><font face="monospace, monospace">fatal:NclGRIB2: Deleting reference to parameter; unable to decode grid template 3.101</font></div><div class="gmail_default"><font face="monospace, monospace"><br></font></div><div class="gmail_default"><font face="monospace, monospace">Variable: f</font></div><div class="gmail_default"><font face="monospace, monospace">Type: file</font></div><div class="gmail_default"><font face="monospace, monospace">filename:<span style="white-space:pre"> </span>ICON_iko_model_level_elements_world_T_2017090512_111</font></div><div class="gmail_default"><font face="monospace, monospace">path:<span style="white-space:pre"> </span>ICON_iko_model_level_elements_world_T_2017090512_111.grib2</font></div><div class="gmail_default"><font face="monospace, monospace"> file global attributes:</font></div><div class="gmail_default"><font face="monospace, monospace"> dimensions:</font></div><div class="gmail_default"><font face="monospace, monospace"> levels0 = 5</font></div><div class="gmail_default"><font face="monospace, monospace"> variables:</font></div><div class="gmail_default"><font face="monospace, monospace"> float levels0_l1 ( levels0 )</font></div><div class="gmail_default"><font face="monospace, monospace"> long_name :<span style="white-space:pre"> </span>unknown</font></div><div class="gmail_default"><font face="monospace, monospace"> units :<span style="white-space:pre"> </span>unknown</font></div><div class="gmail_default"><font face="monospace, monospace"><br></font></div><div class="gmail_default"><font face="monospace, monospace"> float levels0_l0 ( levels0 )</font></div><div class="gmail_default"><font face="monospace, monospace"> long_name :<span style="white-space:pre"> </span>unknown</font></div><div class="gmail_default"><font face="monospace, monospace"> units :<span style="white-space:pre"> </span>unknown</font></div><div class="gmail_default"><br></div></div><div class="gmail_default">I am also curious to know if CDO can convert this file to NetCDF...</div><div class="gmail_default"><br></div><div class="gmail_default" style="font-size:small">--Mary</div><div class="gmail_default" style="font-size:small"></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 1, 2017 at 7:35 AM, Guido Cioni <span dir="ltr"><<a href="mailto:guidocioni@gmail.com" target="_blank">guidocioni@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 style="word-wrap:break-word">Hey Michael.<div>first of all THANK YOU. I'm working here at the MPI-MET in Hamburg but didn't know at all that the data were freely accessible now. That's amazing!!</div><div><br></div><div>Second, I think the problem relies in the NCL installation in your system. I just tried to read a data from the link that you provided into NCL (after testing a ncl_filedump command) and everything worked fine. I tried both on my local machine (Macbook) and on our supercomputer (Mistral).</div><div><br></div><div>I guess you are missing something of the grib api library... Are you able to convert the file into netcdf first via CDO? </div><div>Cheers </div><div><div><div class="h5"><br><div><blockquote type="cite"><div>On 1. Sep 2017, at 15:19, Michael Langguth <<a href="mailto:mlangguth@uni-bonn.de" target="_blank">mlangguth@uni-bonn.de</a>> wrote:</div><br class="m_6183972451899475657Apple-interchange-newline"><div><div>Dear all,<br><br>since an amendment in Germany, the German Meteorological Service (DWD) provides free output data access of the global model ICON (see: <a href="https://opendata.dwd.de/weather/icon/global/grib/" target="_blank">https://opendata.dwd.de/<wbr>weather/icon/global/grib/</a>). The data is stored in grib2-files.<br>Unfortunately, NCL seems not be able to handle these grib2-files.<br>Every time, when I try to open the file using the addfile-function, NCL gives the following error message:<br><br>fatal:NclGRIB2: Deleting reference to parameter; unable to decode grid template 3.101<br><br>I'm using NCL-version 6.3.0 (on a Linux cluster with openSUSE 42.1), but I've already tested the latest version 6.4.0, too (without success).<br>Is there any way to add the missing grid template and to fix the problem?<br><br>Example data can be generated by downloading and unpacking an arbitrary file from:<br><a href="https://opendata.dwd.de/weather/icon/global/grib/t/" target="_blank">https://opendata.dwd.de/<wbr>weather/icon/global/grib/t/</a><br><br>Thanks for your effort and best regards,<br>Michael Langguth<br>______________________________<wbr>_________________<br>ncl-talk mailing list<br><a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>List instructions, subscriber options, unsubscribe:<br><a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/<wbr>mailman/listinfo/ncl-talk</a><br></div></div></blockquote></div><br></div></div><span class="HOEnZb"><font color="#888888"><div>
<div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br class="m_6183972451899475657Apple-interchange-newline">Guido Cioni</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://guidocioni.altervista" target="_blank">http://guidocioni.altervista</a>.<wbr>org</div>
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