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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"><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"><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"><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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