Hi Nan, I must admit a little discomfort watching the process of CF semantic modelling replacing a well-known term with something that nobody in the domain would recognise without significant education. I didn't comment because I as a semantic modeller I can see both sides. However, I think you're right and Wally Broecker's work is so well absorbed into biogeochemistry that we should respect his terminology.
Cheers, Roy. ________________________________________ From: Nan Galbraith [ngalbra...@whoi.edu] Sent: 20 January 2015 18:35 To: cf-metadata@cgd.ucar.edu Subject: [CF-metadata] Fwd: Re: Request for new standard-name: apparent_oxygen_utilization Hi all - I received this follow-up from Ajay, and thought it would be OK to share it with the list. I wasn't aware of it, but 'apparent oxygen utilization' seems to be a well-defined term in oceanography. Not sure if this changes others' opinions, but it does change mine. Regards - Nan -------- Original Message -------- Subject: Re: [CF-metadata] Request for new standard-name: apparent_oxygen_utilization Date: Thu, 15 Jan 2015 15:24:25 -0500 From: Ajay Krishnan - NOAA Affiliate <ajay.krish...@noaa.gov> To: Nan Galbraith <ngalbra...@whoi.edu> Hi Nan, I posed your question to the Science team that requested the standard name and this was their response: Maybe it is better to stick to a citable reference. No additional description of what AOU is necessary, in my opinion. But if one is needed, I can slightly modify Tim's version AOU, Apparent Oxygen Utilization, is defined as the difference between the saturation oxygen concentration at 1 atmosphere and the observed oxygen concentration (Broecker and Peng, 1982) Broecker, W. S. and T. H. Peng (1982), Tracers in the Sea, Lamont-Doherty Earth Observatory, Palisades, N. Y. ---------- Forwarded message ---------- Date: Thu, 15 Jan 2015 13:21:57 -0500 (EST) From: Tim Boyer <tim.bo...@noaa.gov <mailto:tim.bo...@noaa.gov>> To: Ajay Krishnan - NOAA Affiliate <ajay.krish...@noaa.gov <mailto:ajay.krish...@noaa.gov>> Subject: Re: Fwd: [CF-metadata] Request for new standard-name: apparent_oxygen_utilization Ajay, ... AOU is a standard calculation made by oceanographers to estimate non-physical usage of oxygen - non-physical meaning biological uptake/release and chemical reaction. Physically, it is assumed that oxygen will be saturated at the surface with respects to the atmosphere through physical processes and therefore only non-physical processes can alter oxygen content from saturation state. If Nan (or Hernan) would like to suggest a change or addition to the definition, thats fine. As for whether AOU should be defined somewhere else, cell method or standard name modifier - that is something for you CF experts to decide. Please ask Nan to propose such a definition. Thanks, Tim On Thu, Jan 15, 2015 at 9:30 AM, Nan Galbraith <ngalbra...@whoi.edu <mailto:ngalbra...@whoi.edu>> wrote: Hi, Ajay - This looks, at first glance, like a too-specific term; the definition doesn't carry as much information as the proposed standard name itself. What I mean, specifically is, aren't there times when the difference between saturation oxygen and observed oxygen are NOT a measure of oxygen utilization? And, isn't there an existing method to describe a value that represents a difference such as this? Standard name modifier, or cell method, I'm not sure which ... sorry I can't look more closely at this right now! Regards - Nan On 1/14/15 11:54 AM, Ajay Krishnan - NOAA Affiliate wrote: > Hi All, > > I had requested for a new standard name for > apparent_oxygen_utilization during the last week of November. > Since, there have been no discussions on it, I wanted to quickly > follow up on it. > > Thanks, > Ajay > > On Mon, Nov 24, 2014 at 2:16 PM, Ajay Krishnan - NOAA Affiliate > <ajay.krish...@noaa.gov <mailto:ajay.krish...@noaa.gov>> wrote: > > Dear CF community, > > On behalf of NODC, I would like to request for a new standard > name: > > apparent_oxygen_utiliziation (AOU) > definition: the difference between saturation oxygen content > and observed oxygen content. > units: micromoles/kg > > > Description is from Broecker and Peng, 1982, Tracers in > the Sea > > http://www.ldeo.columbia.edu/~broecker/Home_files/TracersInTheSea_searchable.pdf > > <http://www.ldeo.columbia.edu/%7Ebroecker/Home_files/TracersInTheSea_searchable.pdf> > (pp 131-138) > > Some more detail in Garcia et al., World Ocean Atlas > Volume 3: Dissolved Oxygen, Apparent Oxygen Utilization, and > Oxygen Saturation. > http://data.nodc.noaa.gov/woa/WOA13/DOC/woa13_vol3.pdf > > Thanks, > Ajay > > > -- ******************************************************* * Nan Galbraith Information Systems Specialist * * Upper Ocean Processes Group Mail Stop 29 * * Woods Hole Oceanographic Institution * * Woods Hole, MA 02543(508) 289-2444 <tel:%28508%29%20289-2444> * ******************************************************* _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata This message (and any attachments) is for the recipient only. 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