On 07-01-15 16:15, Jonathan Gregory wrote:
> Dear Maarten
>
> A mole is also a udunit, so mol m-3 and m-3 are different units, and quantities
> with those canonical units also have to have different standard_names. The
> standard_name indicates whether the quantity refers to number concentration or
> molar concentration.  I am not sure if I've understood you correctly.
No, I don't think you have.
1e15 molecules/cm2 NO2 is a valid column amount for NO2, but at the same 
time I'm trying to convince my colleagues that this quantity should be 
expressed in mol/m2 (specifically 16.6 micromol/m2 for said column 
amount). These express the same quantity and should _not_ use different 
standard names, not in the case of molecules. In the end the number 
density should become extinct for molecular species, switching 
completely to mol based units. Having different standard names will only 
serve to hinder the transition.
Kind regards,
Maarten Sneep
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KNMI
T: 030 2206747
E: maarten.sneep at knmi.nl
R: A2.14
Received on Wed Jan 07 2015 - 08:33:33 GMT