hi:
I think I would also advocate adding another standard attribute,
something like "units_label" which would be a label for the units in a
plot, not necessarily udunit compliant.
eg:
var : units = "";
var : units_label = "milligrams per gram of dry sediment";
john
On 12/9/2011 2:09 AM, Lowry, Roy K. wrote:
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: [email protected]
[mailto:[email protected]] On Behalf Of Steve Emmerson
Sent: 08 December 2011 23:58
To: Upendra Dadi
Cc: [email protected]
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
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