Hi Matthias! I support the direction of this request. I note the resemblance to the 'downward_mass_flux_...' standard names recently requested, and I have assumed that phrase is a common CF way of saying the same thing. (Oddly, I missed the sinking_ ones when formulating my request.)
Perhaps we should see if one or the other is more dominant and move toward a single phrasing? With regard to units, I think the list would say 'request what you use and need'. Some people will measure mole_flux, some will measure mass_flux. (No?) John On Oct 9, 2013, at 16:16, Matthias Lankhorst <[email protected]> wrote: > Dear CF community, > > in the OceanSITES project, we would like to publish data from sediment traps > in files, using the CF conventions. Sediment traps are devices moored > underwater in the ocean, which collect sinking particles (detritus) in a > funnel and into sample bottles for later analyses. Analyses can be done for a > variety of substances. It looks like we need a few more standard names for > these, and possibly a discussion whether some of them should be expressed as > mass fluxes or as substance amount (mole) fluxes. > > I noticed that CF already has these standard names, all as mole fluxes with > canonical units of mol m-2 s-1: > > sinking_mole_flux_of_aragonite_expressed_as_carbon_in_sea_water > sinking_mole_flux_of_calcite_expressed_as_carbon_in_sea_water > sinking_mole_flux_of_particulate_iron_in_sea_water > sinking_mole_flux_of_particulate_organic_matter_expressed_as_carbon_in_sea_water > sinking_mole_flux_of_particulate_organic_nitrogen_in_sea_water > sinking_mole_flux_of_particulate_organic_phosphorus_in_sea_water > sinking_mole_flux_of_particulate_silicon_in_sea_water > > Here is the list of quantities that we need to address in OceanSITES. My > initial proposal is to introduce them all as mass fluxes with canonical units > of kg m-2 s-1. If we should rather go with mole fluxes like the ones above, > please chime in. > > Total/organic mass: > Propose new standard names: > sinking_mass_flux_of_particulate_matter_in_sea_water > sinking_mass_flux_of_particulate_organic_matter_in_sea_water > (I suppose these are understood as dry mass, i.e. weighed after water has > evaporated.) > > Particulate organic, inorganic, total carbon: > Propose new standard names: > sinking_mass_flux_of_particulate_organic_carbon_in_sea_water > sinking_mass_flux_of_particulate_inorganic_carbon_in_sea_water > sinking_mass_flux_of_particulate_carbon_in_sea_water > (or should we include "total" somewhere in the latter?) > > Particulate organic, inorganic, total nitrogen: > Propose new standard names: > sinking_mass_flux_of_particulate_organic_nitrogen_in_sea_water > sinking_mass_flux_of_particulate_inorganic_nitrogen_in_sea_water > sinking_mass_flux_of_particulate_nitrogen_in_sea_water > (or should we include "total" somewhere in the latter?) > > Other particulate substances from a list: > Propose new standard names for each of the following, to be constructed as: > sinking_mass_flux_of_particulate_XXX_in_sea_water, > where XXX is: > - aluminum > - iron > - phosphorous > - silica > - biogenic_silica > - lithogenic_silica > - calcium > - titanium > - manganese > - barium > - magnesium > > Your expert comments are highly appreciated! > > Respectfully, Matthias > > > -- > _______________________________________ > > Dr. Matthias Lankhorst > Scripps Institution of Oceanography > 9500 Gilman Drive, Mail Code 0230 > La Jolla, CA 92093-0230 > USA > > Phone: +1 858 822 5013 > Fax: +1 858 534 9820 > E-Mail: [email protected] > http://www-pord.ucsd.edu/~mlankhorst/ > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata ------------------------------------ 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
