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    <p>Neill,</p>
    <p>Lack of a standard name doesn't make the file non-compliant.
      There's no minimum set of required attributes. If you follow the
      conventions in how you make your observation number coordinate
      variable, then you are fine, even if there is no standard name for
      it.</p>
    <p>Grace and peace,</p>
    <p>Jim<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 10/31/17 7:36 AM, Bowler, Neill
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:AA8BFBA9A1F8B849B210D84876B54A3243BD8FFF@EXXCMPD1DAG3.cmpd1.metoffice.gov.uk">
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        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">Hi
            all,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">I’m
            very new to this, so please forgive my ignorance.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">I’m
            working on GPSRO data, and once this data has been collated
            we write it to a netCDF file.  The main observation data is
            written as a 2D array with dimensions observation number (1
            to n, where n will vary from file to file) and height (from
            0 to 60km).  The file also contains lots of additional data
            (such as latitude and longitude of each observation, the ID
            of the satellite used, etc).  The integer observation number
            is the only sensible unique dimension that I know of.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">My
            difficulty is that observation number, or something similar,
            is not in the CF standard.  Therefore my files are not
            CF-compliant, although they are in every other respect.  Is
            there scope for adding something like observation number to
            the standard?<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">Many
            thanks,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">Neill<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:12.0pt;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"">Neill
            Bowler  Expert Scientist - GPSRO & Ensemble Forecasting<br>
            Met Office  FitzRoy Road  Exeter  Devon  EX1 3PB  United
            Kingdom<br>
            Tel: +44 (0)1392 886449  Fax: +44 (0)1392 885681<br>
            Email: </span><a
            href="mailto:Neill.Bowler@metoffice.gov.uk"
            moz-do-not-send="true"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Neill.Bowler@metoffice.gov.uk</span></a><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""> 
            Website:
          </span><a href="http://www.metoffice.gov.uk"
            moz-do-not-send="true"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">www.metoffice.gov.uk</span></a><span
            style="font-size:12.0pt;font-family:"Times New
            Roman","serif""><o:p></o:p></span></p>
        <p class="MsoNormal"><a
            href="http://www.metoffice.gov.uk/research/people/neill-bowler"
title="blocked::http://www.metoffice.gov.uk/research/people/neill-bowler"
            moz-do-not-send="true"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">http://www.metoffice.gov.uk/research/people/neill-bowler</span></a><span
            style="color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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      <pre wrap="">_______________________________________________
CF-metadata mailing list
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<a class="moz-txt-link-freetext" href="http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata">http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata</a>
</pre>
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                              Information
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                            <i>formerly NOAA’s National Climatic Data
                              Center</i>
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