Mathematics – Logic
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.289..386p&link_type=abstract
Nature, vol. 289, Jan. 29, 1981, p. 386-388.
Mathematics
Logic
5
Atmospheric Chemistry, Molecular Excitation, Nitrous Oxides, Ozone, Photolysis, Atmospheric Temperature, Gas Dissociation, Nitrogen, Ozonosphere, Photodissociation, Schumann-Runge Bands, Turbulent Diffusion, Ultraviolet Absorption
Scientific paper
Consideration is given to the possibility that internally excited ozone formed in the three-body recombination reaction between oxygen atoms and molecules may be a potential source of atmospheric N2O through a gas-phase reaction with nitrogen molecules. Determinations of the wavelength dependence of the quantum yield for N2O formation from the photolysis of dilute solutions of O3 in liquid N2 and of the O(1D) quantum yield in the gas-phase photolysis of O3 are interpreted as suggesting the possibility of the excited ozone reaction, and a new expression for N2O quantum yield is derived. An expression for the production rate of N2O through the proposed reaction is then obtained and used to calculate atmospheric concentrations and fluxes of N2O. The theoretical profile obtained is found to agree better with experimental data than that obtained without the excited ozone reaction taken into account and to demonstrate a wide variability in N2O mixing ratios. In addition, the existence of the new N2O source is noted to imply a significantly smaller flux of N2O from surface microbiological activities, and provide a possible physical basis for latitudinal and temporal N2O variations and an additional stability for the ozone layer.
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