Dear Stephane, Matthias, All,
I know that these sediment trap names have been sitting around for an
awfully long time - my apologies it has taken this long for me to
review the original discussion. I think the only bone of contention
was, as you say, around the use of the word "total" and there was a
general opinion that the names would be useful with or without it. So,
belatedly, I would like to come down on the side of not including
"total" in the names. In CF, we have always taken the view that
something should be regarded as fully inclusive, i.e. total, unless
stated otherwise . As the person looking after the standard name table
my concern is always to make our list of names as internally consistent
as possible, hence my preference for sticking with the established CF
practice on this point. I have added a sentence to the definitions of
the "particulate_matter" names to emphasize that it includes both
organic and inorganic species.
Regarding the nitrogen and carbon names, we should write
"particulate_[organic|inorganic]_matter_expressed_as_carbon|nitrogen"
rather than simply "particulate_[organic|inorganic]_carbon|nitrogen",
again for consistency with other names, otherwise they are fine.
If you are happy with the following versions of the names and
definitions then they can be accepted for inclusion in the standard
name table.
I am aware that the original proposal from Matthias contained names for
a number of other chemical species, but I will pick those up in a
separate posting.
sinking_mass_flux_of_particulate_matter_in_sea_water (canonical units:
kg m-2 s-1) ' In accordance with common usage in geophysical
disciplines, "flux" implies per unit area, called "flux density" in
physics. "Sinking" is the gravitational settling of particulate matter
suspended in a liquid. A sinking flux is positive downwards and is
calculated relative to the movement of the surrounding fluid. Sinking
mass flux is understood as dry mass, i.e. weighed after water has
evaporated. "Particulate matter" includes particles composed of both
organic and inorganic chemical species.'
sinking_mass_flux_of_particulate_organic_matter_in_sea_water (canonical
units: kg m-2 s-1) ' In accordance with common usage in geophysical
disciplines, "flux" implies per unit area, called "flux density" in
physics. "Sinking" is the gravitational settling of particulate matter
suspended in a liquid. A sinking flux is positive downwards and is
calculated relative to the movement of the surrounding fluid. Sinking
mass flux is understood as dry mass, i.e. weighed after water has
evaporated.'
sinking_mass_flux_of_particulate_matter_expressed_as_carbon_in_sea_water
(canonical units: kg m-2 s-1) ' In accordance with common usage in
geophysical disciplines, "flux" implies per unit area, called "flux
density" in physics. "Sinking" is the gravitational settling of
particulate matter suspended in a liquid. A sinking flux is positive
downwards and is calculated relative to the movement of the surrounding
fluid. Sinking mass flux is understood as dry mass, i.e. weighed after
water has evaporated. 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. "Particulate matter" includes particles
composed of both organic and inorganic chemical species.'
sinking_mass_flux_of_particulate_organic_matter_expressed_as_carbon_in_sea_water
(canonical units: kg m-2 s-1) 'In accordance with common usage in
geophysical disciplines, "flux" implies per unit area, called "flux
density" in physics. "Sinking" is the gravitational settling of
particulate matter suspended in a liquid. A sinking flux is positive
downwards and is calculated relative to the movement of the surrounding
fluid. Sinking mass flux is understood as dry mass, i.e. weighed after
water has evaporated. 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.'
sinking_mass_flux_of_particulate_inorganic_matter_expressed_as_carbon_in_sea_water
(canonical units: kg m-2 s-1) 'In accordance with common usage in
geophysical disciplines, "flux" implies per unit area, called "flux
density" in physics. "Sinking" is the gravitational settling of
particulate matter suspended in a liquid. A sinking flux is positive
downwards and is calculated relative to the movement of the surrounding
fluid. Sinking mass flux is understood as dry mass, i.e. weighed after
water has evaporated. 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.'
sinking_mass_flux_of_particulate_matter_expressed_as_nitrogen_in_sea_water
(canonical units: kg m-2 s-1) 'In accordance with common usage in
geophysical disciplines, "flux" implies per unit area, called "flux
density" in physics. "Sinking" is the gravitational settling of
particulate matter suspended in a liquid. A sinking flux is positive
downwards and is calculated relative to the movement of the surrounding
fluid. Sinking mass flux is understood as dry mass, i.e. weighed after
water has evaporated. 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. "Particulate matter" includes particles
composed of both organic and inorganic chemical species.'
sinking_mass_flux_of_particulate_organic_matter_expressed_as_nitrogen_in_sea_water
(canonical units: kg m-2 s-1) 'In accordance with common usage in
geophysical disciplines, "flux" implies per unit area, called "flux
density" in physics. "Sinking" is the gravitational settling of
particulate matter suspended in a liquid. A sinking flux is positive
downwards and is calculated relative to the movement of the surrounding
fluid. Sinking mass flux is understood as dry mass, i.e. weighed after
water has evaporated. 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.'
sinking_mass_flux_of_particulate_inorganic_matter_expressed_as_nitrogen_in_sea_water
(canonical units: kg m-2 s-1) 'In accordance with common usage in
geophysical disciplines, "flux" implies per unit area, called "flux
density" in physics. "Sinking" is the gravitational settling of
particulate matter suspended in a liquid. A sinking flux is positive
downwards and is calculated relative to the movement of the surrounding
fluid. Sinking mass flux is understood as dry mass, i.e. weighed after
water has evaporated. 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.'
Best wishes, Alison
------
-----Original Message-----
From: CF-metadata On Behalf Of Stephane TAROT
Sent: 27 November 2015 14:50
Subject: Re: [CF-metadata] standard names for sediment trap data
Dear Colleagues,
In december 2013, some standard names (see below) for sediment trap
data parameters were almost approved.
Last august, I suggested that we can maybe consider them as approved. I
had no response (so, nobody disagrees).
What is the next step in order to have them added to the official list
of standard names ?
Best regards
Stéphane Tarot
Le 14/08/2015 10:45, Stephane TAROT a écrit :
Hi,
I'd like to put back this subject on top of the list.
The following 8 new parameters were almost approved in december 2013 :
sinking_mass_flux_of_particulate_matter_in_sea_water
sinking_mass_flux_of_particulate_organic_matter_in_sea_water
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
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
(with a canonical unit : kg m-2 s-1)
There was only a remark from Roy who suggested to add "total" for
total_carbon (=organic+inorganic in its definition) and total_nitrogen
in names 5 and 8
But he also said it shouldn't be a stopper to include/exclude it.
So can we agree on those new parameters, and add them to the list ?
Best regards
Stéphane Tarot
Le 04/02/2015 17:54, Jonathan Gregory a écrit :
Dear Nan and Alison
I think Alison's view on this would be helpful in particular.
Best wishes
Jonathan
----- Forwarded message from Nan Galbraith <[email protected]> -----
Date: Wed, 4 Feb 2015 10:05:56 -0500
From: Nan Galbraith <[email protected]>
Subject: Re: [CF-metadata] standard names for sediment trap data
Hello CF -
This request for standard names for sediment trap data variables seems
to have languished since mid-December. Are we waiting for Matthias to
respond to comments from Roy and Jonathan, or are we ready to make
a decision?
I may have left out some of the messages on the thread, which were not
included in the last round of emails.
Regards - Nan
On 12/9/13 7:17 AM, Lowry, Roy K. wrote:
Dear All,
My reason for including 'total' in these cases is because I've seen
it used in that way by communities handling those particular
parameters. Question is whether we follow CF past practice or
established usage outside CF. I would prefer to follow community
practice, but don't see inclusion/exclusion of total as a
show-stopper. Jonathan and I (not for the first time) make the
opinion score 1 all. Anybody else any views on this?
Cheers, Roy.
________________________________________
From: CF-metadata On Behalf Of Jonathan Gregory
Sent: 08 December 2013 00:01
Subject: [CF-metadata] standard names for sediment trap data
Dear Roy
Thinking about it over night (I'm currently in San Diego), I think
a way forward might be to use the word 'total' in all cases, but
define is as 'in every form', which provides a common denominator
between these two usages.
Yes, that's possible, but even simpler is to say that if nothing is
specified,
the *default* is "in every form". I think that is the approach we
have usually
taken, although I can't think of examples off the top of my head. I
would note,
however, that there is only one existing standard name containing
the word
"total" viz
sea_water_ph_reported_on_total_scale
in which "total" appears because it is the technical name of that
scale.
(And I'm in Toronto on the way to San Francisco.)
Best wishes
Jonathan
