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[CF-metadata] Proposal for additional CF biogeochemistry attributes

From: olivier lauret <olauret>
Date: Wed, 13 May 2009 17:58:31 +0200

Hi all,

I am not sure Bruce and others received previous answer from Jonathan.

I am OK with 'mole_mixing_ratio_of_nitrate_to_phosphate_in_sea_water'.

Kind regards,

Olivier.

-----Message d'origine-----
De?: cf-metadata-bounces at cgd.ucar.edu [mailto:cf-metadata-bounces at cgd.ucar.edu] De la part de Jonathan Gregory
Envoy??: mercredi 13 mai 2009 09:16
??: cf-metadata at cgd.ucar.edu
Objet?: [CF-metadata] Proposal for additional CF biogeochemistry attributes

Dear Philip and Bruce

> In the atmosphere CF has used 'mole_fraction_' to designate mole/mole
> quantities.
>
> Hence, perhaps we should use
> MOLE_FRACTION_of_nitrate_to_phosphate_in_sea_water here?
>
> The counter argument is that, in every existing CF std name I could find,
> mol_fraction_ is always the mole ratio of the species to air.

> Hence, I think the question boils down to: Do we want to create a new
> prefix (ie 'mole_ratio_') for ratios of species to species (as opposed to
> the ratio of species to medium)?

Yes, I think that would be a good choice, for instance a pattern
  mole_ratio_of_X_to_Y_in_sea_water
or perhaps
  mole_mixing_ratio_of_X_to_Y_in_sea_water
by analogy to four existing standard names that use the phrase mixing_ratio.

> (They also seem to prefer expressing oxygen concentration in
> ml/l, by the way.)

One of these four is the existing standard name
  volume_mixing_ratio_of_oxygen_at_stp_in_sea_water
which I think is just what you want i.e. the ratio of the volume of oxygen gas
at STP to the volume of water it is dissolved in.

Best wishes

Jonathan
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Received on Wed May 13 2009 - 09:58:31 BST

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