Hi Matthias, I'm going to have to go with in-situ, unless someone can correct me otherwise. I'm 86.33% confident, however. I have been looking at Jim Orr's documentation ( http://www.geosci-model-dev-discuss.net/gmd-2016-155/gmd-2016-155.pdf), and it cites:
Dickson, A. G., Sabine, C. L., and Christian, J. R.: Guide to best practices for ocean CO2 measurements, , PICES Special Publication 3, 191 pp., http://aquaticcommons.org/1443/, 2007. which gives the calculations for pH on the total scale in SOP6a and SOP6b as a function of insitu T as a variable. Also, I would argue from an environmental science perspective that we *should* be posting the insitu variable. Hope that helps! John On Thu, Jun 8, 2017 at 5:56 AM, Matthias Tuma <[email protected]> wrote: > Hello all, > > we had a question come up for the "sea_water_ph_reported_on_total_scale" > standard name: it appears that for some communities, in particular on the > measurement side, pH would regularly be reported only after first having > converted to its equivalent at standard conditions (25C, 0dbar). In other > communities, pH would most regularly be reported at in-situ conditions > (temperature and pressure at actual measurement spot). > > While we assume that the CF conventions would implicitly assume values to > be reported at in-situ conditions (i.e., the latter variant), my two > questions are: > 1) whether someone can confirm this, to be 100% certain?, and > 2) whether adding a few according clarifying words to the description > would be seen as useful? > > Thanks and best, > Matthias > > -- > Matthias Tuma > WCRP Junior Professional Officer > c/o WMO > 7bis, avenue de la Paix > Case postale 2300 > CH-1211 Geneva 2 > Switzerland > Tel: +41 22 730 8217 <+41%2022%20730%2082%2017> > Fax: +41 22 730 8036 <+41%2022%20730%2080%2036> > Email: [email protected] > http://www.wcrp-climate.org > > ------------------------------------------------------------ > ------------------ > The information contained in this electronic message and any attachments > are intended for specific individuals or entities, and may be confidential, > proprietary or privileged. If you are not the intended recipient, please > notify the sender immediately, delete this message and do not disclose, > distribute or copy it to any third party or otherwise use this message. The > content of this message does not necessarily reflect the official position > of the World Meteorological Organization (WMO) unless specifically stated. > Electronic messages are not secure or error free and may contain viruses or > may be delayed, and the sender is not liable for any of these occurrences. > ------------------------------------------------------------ > ------------------ > Please do not print this e-mail unless absolutely necessary - SAVE PAPER > > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > >
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