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Concept

Mass fraction of alkanes in air

URI http://vocab.nerc.ac.uk/standard_name/mass_fraction_of_alkanes_in_air/
Within Vocab Climate and Forecast Standard Names
Definition Mass fraction is used in the construction mass_fraction_of_X_in_Y, where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). 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'. 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.
Date None
Note accepted
modified 2009-07-06 15:41:29.0
Broad Match P02:AALK Concentration of alkanes in the atmosphere
P04:G140 EARTH SCIENCE > Atmosphere > Atmospheric Chemistry/Carbon and Hydrocarbon Compounds > Non-methane Hydrocarbons
Exact Match http://mmisw.org/ont/cf/parameter/mass_fraction_of_alkanes_in_air
http://vocab.nerc.ac.uk/standard_name/mass_fraction_of_alkanes_in_air/
P07:CF12N328 mass_fraction_of_alkanes_in_air
Related P06:UUUU Dimensionless

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