Hi again, I have seen many examples of model output over the years where salinities have been tagged with the units of 'PSU' but I know for a fact that the source data used have been a mixture of PSS-78 and historical data that strictly speaking should be given units of ppt.
I would counsel against adding a new Standard Name for labelling model output. Cheers, Roy. I have now retired but will continue to be active through an Emeritus Fellowship using this e-mail address. ________________________________ From: CF-metadata <cf-metadata-boun...@cgd.ucar.edu> on behalf of Andrew Barna <aba...@ucsd.edu> Sent: 10 September 2019 18:38 To: Cathy Smith <cathy.sm...@noaa.gov> Cc: CF Metadata List <cf-metadata@cgd.ucar.edu> Subject: Re: [CF-metadata] new variable name request Hi Cathy, The “P” of PSU is “Practical” so it's almost certain to be PSS-78, it sounds like we should get “sea_water_practical_salinity_at_sea_floor” on the list. Let me know what the oceanographer says and we can get a name proposed. -Barna > On 2019-09-10, at 07:32, Cathy Smith <cathy.sm...@noaa.gov> wrote: > > Thanks. I didn't think to look. It's a reanalysis dataset so not measured > directly. The units are PSU. I'm not sure either "methods" below apply. The > observed data for ORAS5 reanalysis is from here > > https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2013JC009067 > > I'll ask an oceanographer here if he has any idea about this. > > Cathy > > On 9/10/19 11:23 AM, Andrew Barna wrote: >> Hi Cathy, >> >> There is already the name `sea_water_salinity_at_sea_floor` in the CF >> standard name list. However, if you know the scale you are calculating, a >> new name should be added to indicate this: >> sea_water_practical_salinity_at_sea_floor if using PSS-78 >> or >> sea_water_absolute_salinity_at_sea_floor if using TEOS-10 >> >> I can come up with some definitions if you would like to have either of >> these proposed to the list. >> -Barna >> >> >>> On 2019-09-10, at 07:04, Cathy Smith <cathy.sm...@noaa.gov> wrote: >>> >>> Thanks. I will use that variable. >>> >>> I also calculated salinity of the ocean floor. Same question. >>> >>> Cathy >>> >>> On 9/9/19 3:44 PM, Andrew Barna wrote: >>>> Hi Cathy, >>>> >>>> There is the name `sea_water_potential_temperature_at_sea_floor` with the >>>> following definition: >>>> Potential temperature is the temperature a parcel of air or sea water >>>> would have if moved adiabatically to sea level pressure. The potential >>>> temperature at the sea floor is that adjacent to the ocean bottom, which >>>> would be the deepest grid cell in an ocean model. >>>> >>>> From what I can tell, there is no “in situ” sea water temperature name at >>>> the sea floor. I’d suggest the following name for this parameter with >>>> canonical units K: >>>> `sea_water_temperature_at_sea_floor` >>>> >>>> Here is a possible definition basically modifying the above to remove the >>>> “potential” parts: >>>> >>>> Sea water temperature is the in situ temperature of the sea water. The >>>> temperature at the sea floor is that adjacent to the ocean bottom, which >>>> would be the deepest grid cell in an ocean model. >>>> >>>> There should probably also be a modification of the existing >>>> sea_water_temperature definition to include this new name if it is >>>> accepted: >>>> >>>> The sentence: >>>> "There are standard names for sea_surface_temperature, >>>> sea_surface_skin_temperature, sea_surface_subskin_temperature and >>>> sea_surface_foundation_temperature which can be used to describe data >>>> located at the specified surfaces.” >>>> >>>> Should be changed to: >>>> >>>> "There are standard names for sea_surface_temperature, >>>> sea_surface_skin_temperature, sea_surface_subskin_temperature, >>>> sea_surface_foundation_temperature, and sea_water_temperature_at_sea_floor >>>> which can be used to describe data located at the specified surfaces.” >>>> >>>> -Barna >>>> >>>>> On 2019-09-09, at 11:23, Cathy Smith <cathy.sm...@noaa.gov> wrote: >>>>> >>>>> All >>>>> >>>>> I have a new variable request; bottom temperature. It is the temperature >>>>> of the ocean floor (or the last level of a multi level ocean dataset). I >>>>> searched and was unable to find it or a variable with "bottom" or synomyn >>>>> as a level. I welcome being pointed out where I missed it. >>>>> >>>>> It is an important variable for fish and aquatic populations near coasts >>>>> (or very shallow oceans). >>>>> >>>>> http://glossary.ametsoc.org/wiki/Bottom_temperature >>>>> >>>>> https://www.frontiersin.org/articles/10.3389/fmars.2019.00030/full >>>>> >>>>> Let me know if this request should go elsewhere. >>>>> >>>>> Thanks >>>>> >>>>> Cathy Smith >>>>> >>>>> ---------------------------------------------- >>>>> NOAA/ESRL PSD and CU CIRES >>>>> 303-497-6263 >>>>> https://www.esrl.noaa.gov/psd/people/cathy.smith/ >>>>> >>>>> Emails about data/webpages may get quicker responses from emailing >>>>> esrl.psd.d...@noaa.gov >>>>> >>>>> _______________________________________________ >>>>> CF-metadata mailing list >>>>> CF-metadata@cgd.ucar.edu >>>>> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata >>> -- >>> ---------------------------------------------- >>> NOAA/ESRL PSD and CU CIRES >>> 303-497-6263 >>> https://www.esrl.noaa.gov/psd/people/cathy.smith/ >>> >>> Emails about data/webpages may get quicker responses from emailing >>> esrl.psd.d...@noaa.gov >>> > -- > ---------------------------------------------- > NOAA/ESRL PSD and CU CIRES > 303-497-6263 > https://www.esrl.noaa.gov/psd/people/cathy.smith/ > > Emails about data/webpages may get quicker responses from emailing > esrl.psd.d...@noaa.gov > _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata This email and any attachments are intended solely for the use of the named recipients. If you are not the intended recipient you must not use, disclose, copy or distribute this email or any of its attachments and should notify the sender immediately and delete this email from your system. UK Research and Innovation has taken every reasonable precaution to minimise risk of this email or any attachments containing viruses or malware but the recipient should carry out its own virus and malware checks before opening the attachments. UK Research and Innovation does not accept any liability for any losses or damages which the recipient may sustain due to presence of any viruses. Opinions, conclusions or other information in this message and attachments that are not related directly to UK Research and Innovation business are solely those of the author and do not represent the views of UK Research and Innovation.
_______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
