Difference between revisions of "Talk:Units"

Revision as of 08:25, June 30, 2006

Discussion Page on Units. If needed, parctice editing in the Sandbox

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UDUNITS have to be used for the standard_names according to the CF convention. This is however not always obvious for chemistry and aerosol variables, where also other units are common. This page provides a discussion on this matter. See also Unidata Supported Units || Unit Converter, UDUNITS

Agreed items of former discussions on the "Units" page can be found here.

JGregory: Don't mix units with the Compound

However, kgC and kgS aren't SI units. I think the unit has to be kg. This implies that it's the standard name which must somehow indicate that it is the mass of C or mass of S which is being referred to, rather than the mass of the compound e.g. dry_deposition_flux_of_sulfur_as_sulfate_at_surface. --JonathanGregory 16:51, 22 May 2006 (EDT)

......CTextor: udunits

Very good idea, I will change this. --Christiane Textor (Christiane) 17:11, 2 June 2006 (EDT)

CTextor: SI units

Try to use SI units if allowed within udunits (e.g. not hours but seconds) --Christiane Textor (Christiane) 12:11, 2 June 2006 (EDT)

RanjeetSokhi(RS) / CTextor (CT): remarks on version June 12 from RS and answers from CT

RS: Table 1 mass_concentration is usually stated in ug/m3 ie micrograms per cubic metre - this is conventional and used in all air quality literature (scientific and policy)

CT: --Christiane Textor (Christiane) 13 June 2006 (EDT)

@@ Line 4: / Line 4: @@
 UDUNITS have to be used for the standard_names according to the CF convention. This is however not always obvious for chemistry and aerosol variables, where also other units are common. This page provides a discussion on this matter. See also [http://www.unidata.ucar.edu/software/udunits/udunits.txt Unidata Supported Units] || [http://www.unidata.ucar.edu/software/udunits/ Unit Converter, UDUNITS]
-==JGregory: UDUNITS used for CF ==
-It doesn't matter to CF what units are used, so long as they are udunits. Any dimensionally equivalent unit can be used for a given standard name. --[[User:JonathanGregory|JonathanGregory]] 16:51, 22 May 2006 (EDT)
+Agreed items of former discussions on the "Units" page can be found [[Agreed Items of Discussion on Units|'''here''']].
-===......RHusar: Units page added to Wiki===
-::This is a good reminder that in addition to updating the CF standard names, we also have to check to make sure that the list of units in [http://www.unidata.ucar.edu/software/udunits/ UDUNITS] includes the units used to measure chemical/aerosol entities. We should make another wiki page specifically to deal with the units. In fact, that [[Units| units page]] has been added (a placeholder). This page is the discussion attached to the units page. An additional section for units has been added in the main page.--[[User:Rhusar|Rhusar]] 19:27, 22 May 2006 (EDT) <br><br>
-===......CTextor: Units page integrated as a subtopic to name definition===
-Given the increasing amount of material I have reintegrated the UNITS page. I think less point on the front page make it easier to use our site. I hope this is fine with you!--[[User:CTextor|CTextor]] 14 June 2006 (EDT)
 ==JGregory: Don't mix units with the Compound==