Stephane,
One additional thing I should have mentioned. My Suggestion #2:
".. just add a new CF-compliant sigma variable to your NetCDF
file. Then add the "standard_name = ocean_sigma_coordinate" to this
new variable (and assign it values that are one less than in your old
variable)."
could be implemented in NcML.
You could create NcML to either create a new sigma variable that
contains the values that CF expects, or just replace the values of
your existing sigma variable. You then add this NcML description of
your new "virtual dataset" to your THREDDS Data Server catalog, and
you can then serve CF-compliant data via OpenDAP without rewriting
your NetCDF output files.
-Rich
On Wed, Oct 22, 2008 at 3:30 AM, Stephane TAROT
<Stephane.Tarot at ifremer.fr> wrote:
> Dear Rich and Jonathan,
>
> Thank you very much for your response. I will transmit your proposition to
> the rest of our team
> to decide together which solution is suitable for us (depending of the
> legitimacy of our equation).
>
>
> Best regards,
>
> St?phane Tarot
>
>
>
>
> Jonathan Gregory a ?crit :
>
> Dear Stephane
>
> A modification of Rich's fourth way:
>
>
>
> 4. Propose a new dimensionless coordinate called
> "ocean_sigma_coordinate2" to the CF standards committee.
>
>
> would be to propose to modify the definition of formula_terms for the ocean
> sigma coordinate to allow some other keyword as an alternative to sigma,
> with the meaning 1-sigma. I think that whether this is worth doing depends
> on whether your alternative definition of sigma is used in other models too.
>
> If you wish to propose a change to the conventions, you should open a new
> ticket on the CF trac site, using the template for changes to the
> convention.
> There is some info at http://cf-pcmdi.llnl.gov/discussion/index_html.
>
> Best wishes
>
> Jonathan
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>
--
Dr. Richard P. Signell (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598
Received on Wed Oct 22 2008 - 07:26:14 BST
