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[CF-metadata] warming up old stuff - part 3: mole_fractions and mass concentrations of additional chemical compounds

From: Schultz, Martin <m.schultz>
Date: Tue, 6 Mar 2012 15:26:05 +0100

Dear all,

    on Oct. 3 the following proposals were made and - if you take Philip's endorsement as that - accepted. Yet, these names never made it anywhere on the list:

* "mole_fraction_of_hydrogen_sulfite_in_air", units "1" (meaning "mole mole-1")
Definition: Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. Hydrogen sulfide is the molecule with the chemical formula H2S.

* "mole_fraction_of_alkanes_in_air", units "1" (meaning "mole mole-1")
Definition: Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. Alkanes are saturated hydrocarbons, i.e. they do not contain any chemical double bonds. Alkanes contain only hydrogen and carbon combined in the general proportions C(n)H(2n+2); "alkanes" is the term used in standard names to describe the group of chemical species having this common structure that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names exist for some individual alkane species, e.g., methane and ethane.

* " mass_concentration_of_coarse_mode_ambient_aerosol_in_air", units "kg m-3"
Definition: Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. Coarse mode aerosol is aerosol having a diameter of more than 1 micrometer.

* "mole_fraction_of_aldehydes_in_air", units "1" (meaning "mole mole-1")
Definition: Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. Aldehydes are organic compounds with a CHO group; "aldehydes" is the term used in standard names to describe the group of chemical species having this common structure that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names exist for formaldehyde as the simplest member of the aldehydes group.

* " mole_fraction_of_dichlorine_in_air", units "1" (meaning "mole mole-1")
Definition: Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. Dichlorine is the molecular form of elemental chlorine with the chemical formula Cl2.

* "mole_fraction_of_methlyglyoxal_in_air", units "1" (meaning "mole mole-1")
Definition: Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. Methylglyoxal is an organic molecule with the chemical formula CH3COCHO. It is also called pyruvaldehyde or 2-oxopropanal.


I request addition to the standard_name table within 1 month.

Martin


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Received on Tue Mar 06 2012 - 07:26:05 GMT

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