. "SDN:P07::CF12N660" . . "false" . . "2009-07-06 15:41:29.0" . . "" . "tendency_of_atmosphere_mass_content_of_propene_due_to_emission"@en . "accepted"@en . . "SDN:P07::CF12N660" . "2009-07-06 15:41:29.0" . . "1" . "SDN:P07::CF12N660" . . "1" . "\"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 specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. \"tendency_of_X\" means derivative of X with respect to time. \"Emission\" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). \"Emission\" is a process entirely distinct from \"re-emission\" which is used in some standard names. The chemical formula for propene is C3H6. Propene is a member of the group of hydrocarbons known as alkenes. There are standard names for the alkene group as well as for some of the individual species."@en . . .