Thanks, Alison -
Your definition looks good to me. Good to include the reference, too.
Maybe Ajay can tell us whether this needs to be limited to sea water,
or if the concept is also used in fresh water work?
- Nan
On 2/26/15 1:11 PM, [email protected] wrote:
Dear Ajay, Roy, All,
Thank youfor the clarification regarding units.
We are now settled on
apparent_oxygen_utilization (mol kg-1).
We do already have a couple of ocean biogeochemistry names referring
to “nitrate utilization” so I think this new name is in keeping with
those.
Based on the definition provided by Ajay and John Graybeal’s suggested
wording, I have currently written the definition as:
“Apparent Oxygen Utilization (often abbreviated as AOU) is the
difference between the saturation concentration of oxygen in sea water
at a pressure of 1 atmosphere (101325 Pa) and the observed oxygen
concentration. It is used to estimate the change in oxygen
concentration due to biological and chemical processes. Reference:
Broecker, W. S. and T. H. Peng (1982), Tracers in the Sea,
Lamont-Doherty Earth Observatory, Palisades, N. Y.” I have
deliberately included “in sea water” in the first sentence of the
definition to make it clear that this is an oceanographic quantity.
Does this all look OK? If so, then I think the name can be accepted
for inclusion in the standard name table.
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/Centre for Environmental Data Archival Email:
[email protected] <mailto:[email protected]>
STFC Rutherford Appleton Laboratory
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K.
*From:*CF-metadata [mailto:[email protected]] *On
Behalf Of *Lowry, Roy K.
*Sent:* 26 February 2015 15:29
*To:* Ajay Krishnan - NOAA Affiliate; [email protected]
*Subject:* Re: [CF-metadata] Request for new standard-name:
apparent_oxygen_utilization
Hi Alison,
Just to clarify that I am in total agreement with this and had a bit
of a senior moment in a previous message.
Cheers, Roy.
------------------------------------------------------------------------
*From:*Ajay Krishnan - NOAA Affiliate [[email protected]]
*Sent:* 26 February 2015 14:56
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [CF-metadata] Request for new standard-name:
apparent_oxygen_utilization
Hi Alison,
Yes, please use mol kg-1 as the canonical unit.
Thanks,
Ajay
*alison.pamment atstfc.ac.uk <http://stfc.ac.uk>* alison.pamment at stfc.ac.uk
<mailto:cf-metadata%40cgd.ucar.edu?Subject=Re%3A%20%5BCF-metadata%5D%20Request%20for%20new%0A%09standard-name%3A%09apparent_oxygen_utilization&In-Reply-To=%3C014539AC4976BE4490A360410A8C20178A2D6062%40EXCHMBX01.fed.cclrc.ac.uk%3E>
/Thu Feb 26 03:56:32 MST 2015/
Dear All,
Thank you for the constructive discussion of this proposal - it seems that agreement has been reached on apparent_oxygen_utilisation with canonical units of mol kg-1. (Just to double check: is this the correct unit for use with the World Ocean Database, which I believe is the reason for requesting the name in the first place. Units of mol m-3 have also been mentioned in this discussion, but this could be a misunderstanding.
Best wishes,
Alison
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