Computer Science
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatc...12...19a&link_type=abstract
Journal of Atmospheric Chemistry (ISSN 0167-7764), vol. 12, Jan. 1991, p. 19-61.
Computer Science
Alkanes, Atmospheric Chemistry, Atmospheric Composition, Mass Transfer, Reaction Products, Troposphere, Planetary Boundary Layer, Spatial Distribution, Temperature Effects
Scientific paper
Calculations are presented for product distributions for each of the most abundant alkanes in the alkane fraction of an ambient-air hydrocarbon mixture representative of U.S. emissions, for temperatures between 250 and 330 K. The yields and chemical lifetimes of alkanes were combined with transport characteristics of these alkanes and their products to estimate their distributions in the planetary boundary layer and the free troposphere. Results show that the C-2 through C-6 alkanes constituted 47 percent of atmospheric hydrocarbons. With increasing temperature, the product yields of alkyl nitrates and of most ketones decreased, while the yields of most of the aldehydes increased. The summer daytime chemical lifetimes of the products of alkanes ranged from a few hours to several months.
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