Dear John I should think it would be helpful to add per unit volume of *what*? to make this clearer.
The existing name could be made an alias of one _per_unit_area if that is generally thought to be a good idea. Besy wishes Jonathan ----- Forwarded message from John Graybeal <[email protected]> ----- > From: John Graybeal <[email protected]> > Date: Tue, 4 Jun 2013 19:06:35 -0700 > To: CF Metadata List <[email protected]> > X-Mailer: Apple Mail (2.1503) > Subject: [CF-metadata] new standard name for primary productivity of carbon > per unit volume > > I would like to request a CF standard name. > > Name: net_primary_productivity_of_carbon_per_unit_volume > Units: kg m-3 s-1 > Definition: Net primary productivity is the excess of > gross_primary_producivity (rate of synthesis of biomass per unit volume from > inorganic precursors by autotrophs, or "producers", especially by > photosynthesising plants using sunlight for energy) over the rate at which > they themselves respire some of this biomass (plant_respiration, assuming all > producers to be plants). "Productivity of carbon" refers to the production of > biomass expressed as the mass of carbon which it contains. > > There is an existing net_primary_productivity_of_carbon, expressed per unit > area. As we are making a data set available which is integrated over a > vertical extent, producing values with units to match (i.e., kg m-3 s-1), a > new standard name is needed. > > Note: It appears the definition of net primary productivity may assume the > value will be measured as per unit area. This probably needs to be corrected. > > John > > > > > > ------------------------------------ > John Graybeal > Senior Data Manager, Metadata and Semantics > > T +1 (408) 675-5545 > F +1 (408) 616-1626 > skype: graybealski > > Marinexplore > 920 Stewart Drive > Sunnyvale, CA > > > > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata ----- End forwarded message ----- _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
