Dear Jonathan,
It is a logical extension, I believe, in the existing usage in terms such as "gross_primary_productivity_of_biomass_expressed_as_carbon", for which the help text states: "The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A", i.e. the new terms are meant to refer to the mass of 13C/14C which is contained in the biomass. regards, Martin ________________________________ From: CF-metadata <[email protected]> on behalf of Jonathan Gregory <[email protected]> Sent: 24 April 2018 13:35 To: [email protected] Subject: [CF-metadata] PMIP (including 1 or more that originated in C4MIP) Standard Names: Carbon and Nitrogen terms Dear Martin Thanks for the new proposals. > gross_primary_productivity_of_biomass_expressed_as_13C > gross_primary_productivity_of_biomass_expressed_as_14C These don't seem quite right to me. They imply you can express the *entire* GPP as kg of 13C or 14C. Does it means the mass of 13C or 14C in the GPP? Best wishes Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
