Dear Maarten,
the four names for methane, water vapor, carbon monoxide and nitrogen dioxide result from simple application of existing CF name patterns, so I support their adoption as you have proposed them. > * atmosphere_mole_content_of_methane > * atmosphere_mole_content_of_water_vapor > * atmosphere_mole_content_of_carbon_monoxide > * atmosphere_mole_content_of_nitrogen_dioxide For semiheavy-water, there is a related discussion about variable required for CMIP6 by PMIP: : http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2018/059995.html For PMIP we need names referring to multiple isotopic variants of water vapor: H-2H-O, H2-O17, H2-O18. We have taken an approach which allows us to be precise in the name and deal with all these variants: e.g. precipitation_flux_containing_2H. This has not been accepted yet, but has some support. Would you be happy to use: atmosphere_mole_content_of_water_vapor_containing_2H with help text which makes it clear that this means a single "2H" atom per water molecule? e.g. "The expression A_containing_B refers to the amount of A which contains B. When B is an isotope, it refers to molecules of A which contain one atom of B, unless indicated otherwise by a number following B." sincerely, Martin Juckes ________________________________ From: CF-metadata <[email protected]> on behalf of Maarten Sneep <[email protected]> Sent: 06 April 2018 13:00 To: [email protected] Subject: Re: [CF-metadata] Standard name proposal related to methane, water vapor, carbon monoxide, semi-heavy water, and nitrogen dioxide. Hi, I haven't heard anything after sending this in. Can these names be considered for inclusion in the standard_name list? Kind regards, Maarten Sneep On 23/02/18 15:04, Maarten Sneep wrote: > Hi, > > I'd like to propose the following standard names: > > * atmosphere_mole_content_of_methane > * atmosphere_mole_content_of_water_vapor > * atmosphere_mole_content_of_carbon_monoxide > * atmosphere_mole_content_of_semiheavy_water_vapor > * atmosphere_mole_content_of_nitrogen_dioxide > > Details are provided below. > > atmosphere_mole_content_of_methane > Canonical units: mol/m2 > Description: "Content" indicates a quantity per unit area. The "atmosphere > content" > of a quantity refers to the vertical integral from the surface to the top of > the > atmosphere. For the content between specified levels in the atmosphere, > standard > names including "content_of_atmosphere_layer" are used. The construction > "atmosphere_mole_content_of_X" means the vertically integrated number of > moles of X > above a unit area. The chemical formula for methane is CH4. Methane is a > member of > the group of hydrocarbons known as alkanes. There are standard names for the > alkane > group as well as for some of the individual species. > > (References: atmosphere_mass_content_of_methane, > atmosphere_mole_content_of_ozone; > for ozone both mole content and mass content exist). > > > atmosphere_column_average_mole_fraction_of_methane_in_dry_air > Canonical units: 1 > > > atmosphere_mole_content_of_water_vapor > Canonical units: mol/m2 > Description: "Content" indicates a quantity per unit area. The "atmosphere > content" > of a quantity refers to the vertical integral from the surface to the top of > the > atmosphere. For the content between specified levels in the atmosphere, > standard > names including "content_of_atmosphere_layer" are used. The construction > "atmosphere_mole_content_of_X" means the vertically integrated number of > moles of X > above a unit area. The chemical formula for water is H2O. Atmosphere water > vapor > content is sometimes referred to as "precipitable water", although this term > does not > imply the water could all be precipitated. > > (References: atmosphere_mass_content_of_water_vapor, > atmosphere_mole_content_of_ozone; for ozone both mole content and mass > content exist). > > > atmosphere_mole_content_of_carbon_monoxide > Canonical units: mol/m2 > Description: "Content" indicates a quantity per unit area. The "atmosphere > content" > of a quantity refers to the vertical integral from the surface to the top of > the > atmosphere. For the content between specified levels in the atmosphere, > standard > names including "content_of_atmosphere_layer" are used. The construction > "atmosphere_mole_content_of_X" means the vertically integrated number of > moles of X > above a unit area. The chemical formula for carbon monoxide is CO. > > (References: atmosphere_mass_content_of_carbon_monoxide, > atmosphere_mole_content_of_ozone; for ozone both mole content and mass > content exist). > > > atmosphere_mole_content_of_semiheavy_water_vapor > Canonical units: mol/m2 > Description: "Content" indicates a quantity per unit area. The "atmosphere > content" > of a quantity refers to the vertical integral from the surface to the top of > the > atmosphere. For the content between specified levels in the atmosphere, > standard > names including "content_of_atmosphere_layer" are used. The construction > "atmosphere_mole_content_of_X" means the vertically integrated number of > moles of X > above a unit area. The chemical formula for semi-heavy water is HDO, water > with one > hydrogen replaced by deuterium. > > Note: This one is tricky, HDO is not D2O, so the correct term is not heavy > water. > Open for suggestions here. > > > atmosphere_mole_content_of_nitrogen_dioxide > Canonical units: mol/m2 > Description: "Content" indicates a quantity per unit area. The "atmosphere > content" > of a quantity refers to the vertical integral from the surface to the top of > the > atmosphere. For the content between specified levels in the atmosphere, > standard > names including "content_of_atmosphere_layer" are used. The construction > "atmosphere_mole_content_of_X" means the vertically integrated number of > moles of X > above a unit area. The chemical formula for nitrogen_dioxide is NO2. > > (References: troposphere_mole_content_of_nitrogen_dioxide, > stratosphere_mole_content_of_nitrogen_dioxide). _______________________________________________ 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
