Scientific Measurements

I'm curious if there are any of you working on annotating scientific
measurements.  Specifically, I'm looking for structured values that would
contain properties such as:

   * "the target quantity" - e.g. air temperature, luminosity, etc.
   * measurement method
   * SI units
   * expected error
   * category (e.g. surface air temperature vs atmospheric air temperature)

Most of my examples come out of weather data but I've also been looking at
the measurements used by astronomers as well.

In fact, the IVOA's UCD (Unified Content Descriptors) [1] is an interesting
approach to creating tuples that are backed by some kind of scientific
measurement semantics.  Their approach hasn't been translated, as far as I
know, into any kind of RDF-aware schema.

[1] http://www.ivoa.net/documents/latest/UCD.html

-- 
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics