[CF-metadata] Units: absolute vs difference

[Jonathan Gregory]

Dear John

> we're looking at WRF model output with temperature differences in 
> Kelvin. unfortunately, our software package converts to Celsius by 
> subtracting 273. We could fix if we knew it was a temp difference 
> instead of an absolute temp.

I don't think the units would be able to help you. Does the WRF model output
distinguish in any other way between temperatures and temperature differences?
Would your software be able to look at other attributes to decide what to do?

Cheers

Jonathan