Hi everyone,
John is making a good point: there are multiple CF standard_names already that
go like "downward_..._flux_...", in contrast to the "sinking_..._flux_..."
ones that I found.
Should we eliminate one?
I have no preference and ask everybody who does to chime in.
I can see the benefits of having just one of the two wordings, but do not
really care which one.
Matthias
> Date: Wed, 9 Oct 2013 17:17:21 -0700
> From: John Graybeal <john.graybeal at marinexplore.com>
> To: CF Metadata List <cf-metadata at cgd.ucar.edu>, OceanSITES Data
> Management Team <oceansites-dmt at jcommops.org>
> Subject: Re: [CF-metadata] standard names for sediment trap data
> Message-ID: <13CC17BA-92E2-4181-BEAE-DF80080F3297 at marinexplore.com>
> Content-Type: text/plain; charset=us-ascii
>
> 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 <mlankhorst at 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_se
> > a_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: mlankhorst at ucsd.edu
> > http://www-pord.ucsd.edu/~mlankhorst/
> > _______________________________________________
> > CF-metadata mailing list
> > CF-metadata at 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
--
_______________________________________
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: mlankhorst at ucsd.edu
http://www-pord.ucsd.edu/~mlankhorst/
Received on Thu Oct 10 2013 - 15:40:33 BST
