Hi Daniel,
Most of the solids in sediment are silicate minerals, quite often quartz (silicon dioxide), which would be included in 'moles_of_silicon' So, I suggest:
moles_of_dissolved_inorganic_plus_biogenic_silicon_per_unit_area_in_seabed_sediment
unit: mol/m2
description: moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Seabed sediment' means particulate matter bound at the sea floor including interstitial pore water. Information on the location of the interface between water column and sediment can be provided via the comment attribute. 'Dissolved inorganic silicon' means the sum of all inorganic silicon in solution (including silicic acid and its first dissociated anion SiO(OH)3-). 'Biogenic silicon' is any silicon compound, usually the mineral opal, produced by organisms (e.g. diatom skeletal remains) in solid or colloidal form.
Cheers, Roy.
I am retiring on 31/05/2018 but will continue to be active through an Emeritus Fellowship using this e-mail address.
________________________________
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu> on behalf of Daniel Neumann <daniel.neumann at io-warnemuende.de>
Sent: 18 May 2018 10:45
To: cf-metadata at cgd.ucar.edu
Subject: Re: [CF-metadata] No standard names for element concentrations in sediment?
Hi,
Thanks for correction. I realized that I need a standard name not only for silicate but for biogenic silica plus silicate. I updated the proposed name and description as follows:
moles_of_silicon_per_unit_area_in_seabed_sediment
unit: mol/m2
description: moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Seabed sediment' means particulate matter bound at the sea floor including interstitial pore water. Information on the location of the interface between water column and sediment can be provided via the comment attribute. 'Silicon' summarizes 'dissolved inorganic silicon' and 'biogenic silica'. 'Dissolved inorganic silicon' means the sum of all inorganic silicon in solution (including silicic acid and its first dissociated anion SiO(OH)3-). 'Biogenic silica' are biogenic silicon minerals which originate from the siliceous skeletal material of dead diatoms and other silica-utilizing organisms.
Daniel
On 18.05.2018 09:47, Lowry, Roy K. wrote:
Hi (yet) again,
Overnight I remembered a debate on CF about not using'dissolved inorganic silicon' rather than 'silicate' in new Standard Names. I also think it's worth some clarification in the definition to explain how things can be dissolved in something that many would think of as a solid.
So that will give us:
moles_of_nitrogen_per_unit_area_in_seabed_sediment
unit: mol/m2
description: moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Seabed sediment' means particulate matter bound at the sea floor including interstitial pore water. Information on the location of the interface between water column and sediment can be provided via the comment attribute.
moles_of_dissolved_inorganic_silicon_per_unit_area_in_seabed_sediment
unit: mol/m2
description: moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Seabed sediment' means particulate matter bound at the sea floor including interstitial pore water. Information on the location of the interface between water column and sediment can be provided via the comment attribute. 'Dissolved inorganic silicon' means the sum of all inorganic silicon in solution (including silicic acid and its first dissociated anion SiO(OH)3-).
Cheers, Roy.
I am retiring on 31/05/2018 but will continue to be active through an Emeritus Fellowship using this e-mail address.
________________________________
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu><mailto:cf-metadata-bounces at cgd.ucar.edu> on behalf of Daniel Neumann <daniel.neumann at io-warnemuende.de><mailto:daniel.neumann at io-warnemuende.de>
Sent: 17 May 2018 19:58
To: cf-metadata at cgd.ucar.edu<mailto:cf-metadata at cgd.ucar.edu>
Subject: Re: [CF-metadata] No standard names for element concentrations in sediment?
Great :-) . Then I would like to propose the following two new standard names:
moles_of_nitrogen_per_unit_area_in_seabed_sediment
unit: mol/m2
description: moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Sediment' means particulate matter bound at the sea floor. Information on the location of the interface between water column and sediment can be provided via the comment attribute.
and
moles_of_silicate_expressed_as_silicon_per_unit_area_in_seabed_sediment
unit: mol/m2
description: moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Sediment' means particulate matter bound at the sea floor. Information on the location of the interface between water column and sediment can be provided via the comment attribute.
Cheers,
Daniel
On 17.05.2018 16:00, Lowry, Roy K. wrote:
Hi Daniel,
That works for me.
Cheers, Roy.
I am retiring on 31/05/2018 but will continue to be active through an Emeritus Fellowship using this e-mail address.
________________________________
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu><mailto:cf-metadata-bounces at cgd.ucar.edu> on behalf of Daniel Neumann <daniel.neumann at io-warnemuende.de><mailto:daniel.neumann at io-warnemuende.de>
Sent: 17 May 2018 10:41
To: CF Metadata Mail List
Subject: Re: [CF-metadata] No standard names for element concentrations in sediment?
Dear Roy, Dear Jonathan,
Thank you for the feedback. I see that sediment might be ambiguous. Would "seabed sediment" or "marine seabed sediment" be an acceptable alternative?
moles_of_nitrogen_per_unit_area_in_seabed_sediment
This would clarify that the sea floor is meant as location of the sediment. It would also clarify that not bare rock is meant.
Cheers,
Daniel
On 16.05.2018 11:42, Lowry, Roy K. wrote:
Thanks Daniel,
Couple of additional thoughts that struck me. Is there possibility of confusion between seafloor sediment and suspended sediment? What if the seabed was bare rock? So, might:
moles_of_nitrogen_per_unit_area_in_seabed
be better?
Let?s see if we get any other thoughts on the list.
Cheers, Roy.
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu><mailto:cf-metadata-bounces at cgd.ucar.edu> On Behalf Of Daniel Neumann
Sent: 16 May 2018 09:28
To: CF Metadata Mail List <cf-metadata at cgd.ucar.edu><mailto:cf-metadata at cgd.ucar.edu>
Subject: Re: [CF-metadata] No standard names for element concentrations in sediment?
Dear Roy,
> I think benthos chemistry is virgin territory for CF - not really surprising for a standard that started in the atmosphere before dipping its toes in the ocean.
:-)
> I'm presuming your coming from a modelling perspective,
Yes
In our current model setup (ecosystem model of the water column) we have a fairly simple sediment and write out the nitrogen amount per m2.
This name might be appropriate for this purpose:
moles_of_nitrogen_per_unit_area_in_sediment
unit:
mol/m2
description:
moles_of_X_per_unit_area_in_Y describes the amount of X in a column with unity base area of material/compartment Y. 'Sediment' means particulate matter bound at the sea floor. Information on the location of the interface between water column and sediment can be provided via the comment attribute.
Cheers,
Daniel
On 15.05.2018 18:30, Lowry, Roy K. wrote:
Dear Daniel,
I think benthos chemistry is virgin territory for CF - not really surprising for a standard that started in the atmosphere before dipping its toes in the ocean.
Some thoughts based on my experience with observed sediment chemistry data. The data may be reported per unit mass of wet or dry sediment or per unit volume of wet sediment. Also it is worth making clear that 'sediment' means sediment of all grain sizes (say a phrase like 'total_sediment') as samples are frequently sieved prior to analysis.
I'm presuming your coming from a modelling perspective, so I'm not totally clear about your needs, but would something like 'mole_concentration_of_nitrogen_in_wet_total_sediment' be what you would be looking for?
Cheers, Roy.
I am retiring on 31/05/2018 but will continue to be active through an Emeritus Fellowship using this e-mail address.
________________________________
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu><mailto:cf-metadata-bounces at cgd.ucar.edu> on behalf of Daniel Neumann <daniel.neumann at io-warnemuende.de><mailto:daniel.neumann at io-warnemuende.de>
Sent: 15 May 2018 16:51
To: CF Metadata Mail List
Subject: [CF-metadata] No standard names for element concentrations in sediment?
Dear CF Mailing List,
I am looking for standard names to describe the mole concentration of
nitrogen in the sediment. The CF standard name table does not contain
any standard names regarding "mole_concentration" in "sediment". I was
wondering whether another term than "sediment" was used for such names.
I also tried "mud", "seabed", and "sea_bed". Or do no such standard
names exist at all?
Cheers,
Daniel
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Leibniz Institute for Baltic Sea Research Warnemuende
Physical Oceanography and Instrumentation
Seestrasse 15
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Germany
phone: +49-381-5197-287
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