John,
Can you remind me what you have proposed in place of
ctd_fluorometer_voltage for the example under discussion? Would
"fluorometer_reading" be an appropriate standard name, and you could
attach a units attribute indicating the measurement is in volts. (The
thing being measured is clearly *not* temperature, even though you might
be able to estimate the temperature based on the measurement, so I see
no reason to include temperature in the standard_name.)
Karl
John Graybeal wrote:
Thank you all for all your thoughts on this.
Jonathan Gregory <[email protected]> 03/12/09 9:57 PM >>>
I don't really know what it is, of course, but it sounds like it could
have a standard name of ctd_fluorometer_voltage and units of V. <snip>
Here, the quantity being named relates specifically to a means of
measurement, not to the final product.
I must quibble. The quantity being named relates specifically to the
_units_ of the measurement, not the means of measurement. And the reason
this (new standard name) must be done is that Standard Names are
specifically tied to units (via the canonical units requirement), and so
the strange unit forces a different standard name.
And so for purest reflection of meaning, we are back to something like
'variant_unit' (instead of 'raw'). I discourage incorporating the unit
in the standard name ('voltage' in Jonathan's example) because there is
no way to know if *this* temperature_voltage variable is interoperable
with *that* temperature_voltage, unless attributes for conversion to
canonical units are provided. So the units attribute can name the
units, and this standard name should just make clear that the units are
not canonical units.
And, can we make it an item in appendix C, please?
What are example of non-udunits? V is a udunit, all right. Perhaps a
non-udunit
is just a count of something? Does that need units? It could simply be
regarded as dimensionless.
Addressed in other thread; no non-udunits have been identified so far
relating to raw geophysical data.
John
--------------
John Graybeal <mailto:[email protected]> -- 831-775-1956
Monterey Bay Aquarium Research Institute
Marine Metadata Interoperability Project: http:// marinemetadata.org
_______________________________________________
CF-metadata mailing list
[email protected]
http:// mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
_______________________________________________
CF-metadata mailing list
[email protected]
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
