Hi Upendra, The Forel-Ule is another example where parameter semantics have been off-loaded in the units of measure, such as 'milligrams per gram of dry sediment'. I have been working to eliminate this by moving the semantics into the parameter description to leave a UDUNITS-compatible UoM.
In BODC we have an equivalent to a Standard Name of 'Colour of the water body by visual estimation and conversion to a number on the Forel-Ule scale' which has units of dimensionless. This would require a new Standard Name were this approach to be used in CF. I'm guessing you want milliequivalents for total alkalinity data. Previously in CF the standard name 'sea_water_alkalinity_expressed_as_mole_equivalent' has been used with the canonical unit 'Moles per cubic metre', which is a pragmatic solution to your problem that works in the oceanographic domain because alkalinity is the only thing we encounter in Equivalents and luckily for us the chemistry is such that 1 Mole = 1 Equivalent. Cheers, Roy. -----Original Message----- From: cf-metadata-boun...@cgd.ucar.edu [mailto:cf-metadata-boun...@cgd.ucar.edu] On Behalf Of Steve Emmerson Sent: 08 December 2011 23:58 To: Upendra Dadi Cc: cf-metadata@cgd.ucar.edu Subject: Re: [CF-metadata] udunits corresponding to Forel-Ule, milliequivalent Upendra, >From the perspective of the UDUNITS unit-packages, the unit "Forel-Ule" is the unit "Forel" multiplied by the unit "Ule" -- neither, of which, is known by the UDUNITS or UDUNITS2 packages. I suggest you contact the author. Regards, Steve Emmerson On 12/08/2011 09:05 AM, Upendra Dadi wrote: > Hi, > I have some data which has "Forel-Ule" for the units used. Is there a > udunits corresponding to this? Also, what should I use for > milliequivalent ? Thanks for the help. > Upendra > _______________________________________________ > CF-metadata mailing list > CF-metadata@cgd.ucar.edu > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata _______________________________________________ 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. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
