Dear Daniel,
We already have a 'mass_concentration_of_inorganic_nitrogen_in_sea_water, in which 'inorganic nitrogen' is defined as:
'Inorganic nitrogen' describes a family of chemical species which, in an ocean model, usually includes nitrite, nitrate and ammonium which act as nitrogen nutrients. 'Inorganic nitrogen' is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute.'
My first comment is that either this Standard Name should be changed to mass_concentration_of_dissolved_inorganic_nitrogen_in_sea_water with references to 'inorganic nitrogen' in the definition changed to 'dissolved inorganic nitrogen' or your proposal should lose the 'dissolved'. My preference would be to have 'dissolved' in both Standard Names. Would you agree?
My second comment is that whilst your proposal is for the 'mole_concentration' analogue to mass_concentration_of_inorganic_nitrogen_in_sea_water, your definition text whilst based on its definition, has been subtly changed with the first sentence removed. Was this intentional and if so why?
Your proposal for iron looks fine to me.
Cheers, Roy.
Please note that I partially retired on 01/11/2015. I am now only working 7.5 hours a week and can only guarantee e-mail response on Wednesdays, my day in the office. All vocabulary queries should be sent to enquiries at bodc.ac.uk. Please also use this e-mail if your requirement is urgent.
________________________________
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu> on behalf of Daniel Neumann <daniel.neumann at io-warnemuende.de>
Sent: 14 August 2017 15:57
To: cf-metadata at cgd.ucar.edu
Subject: [CF-metadata] Two new oceanic standard names for inorganic nitrogen and iron
Dear Mailinglist,
I would like to propose two new standard names for oceanic parameters:
mole_concentration_of_dissolved_inorganic_nitrogen_in_sea_water
mole_concentration_of_dissolved_inorganic_iron_in_sea_water
Reason for nitrogen:
Dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus
(DIP) are a commonly used parameter in biogeochemical modelling. There
exists no standard name for the first (DIN) yet.
Reason for iron:
There is a "tendency_of_ocean_mole_content_of_dissolved_inorganic_*"
standard name existing for iron but no molar concentration. For
completeness, I would like to add a standard name for mole concentration
of inorganic iron in sea water.
Further, I would like to suggest to remove a typo in
"tendency_of_ocean_mole_content_of_dissolved_inorganic_nitrogen".
Currently, the last sentences of its description reads 'Where possible,
the data variableshould be accompanied by a complete description of the
species represented, for example, by using a comment attribute.'. There
is a space missing 'variableshould'.
The full descriptions are given below (combined from existing
description of other "mole_concentration_of_dissolved_inorganic_*" and
"tendency_of_ocean_mole...nitrogen/iron").
Regards,
Daniel
Name:
mole_concentration_of_dissolved_inorganic_nitrogen_in_sea_water
Description:
Mole concentration means number of moles per unit volume, also called
"molarity", and is used in the construction
"mole_concentration_of_X_in_Y", where X is a material constituent of Y.
A chemical or biological species denoted by X may be described by a
single term such as "nitrogen" or a phrase such as
"nox_expressed_as_nitrogen". "Dissolved inorganic nitrogen" is the term
used in standard names for all species belonging to the family that are
represented within a given model. The list of individual species that
are included in a quantity having a group chemical standard name can
vary between models. Where possible, the data variable should be
accompanied by a complete description of the species represented, for
example, by using a comment attribute.
Unit:
mol m-3
Name:
mole_concentration_of_dissolved_inorganic_iron_in_sea_water
Description:
Mole concentration means number of moles per unit volume, also called
"molarity", and is used in the construction
"mole_concentration_of_X_in_Y", where X is a material constituent of Y.
A chemical or biological species denoted by X may be described by a
single term such as "nitrogen" or a phrase such as
"nox_expressed_as_nitrogen". "Dissolved inorganic iron" means iron ions,
in oxidation states of both Fe2+ and Fe3+, in solution.
Unit:
mol m-3
--
Daniel Neumann
Leibniz Institute for Baltic Sea Research Warnemuende
Physical Oceanography and Instrumentation
Seestrasse 15
18119 Rostock
Germany
phone: +49-381-5197-287
fax: +49-381-5197-114 or 440
e-mail: daniel.neumann at io-warnemuende.de
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