Hi John, I totally agree we need to standardise of the phrasing and would vote for sticking with 'sinking_mass/mole_flux as it's established.
Cheers, Roy. ________________________________________ From: CF-metadata [cf-metadata-boun...@cgd.ucar.edu] On Behalf Of John Graybeal [john.grayb...@marinexplore.com] Sent: 10 October 2013 01:17 To: CF Metadata List; OceanSITES Data Management Team Subject: Re: [CF-metadata] standard names for sediment trap data 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 <mlankho...@ucsd.edu> 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: mlankho...@ucsd.edu > http://www-pord.ucsd.edu/~mlankhorst/ > _______________________________________________ > CF-metadata mailing list > CF-metadata@cgd.ucar.edu > 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 CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
