Photodissociation of isotopically heavy O2 as a source of atmospheric O3

Details Photodissociation of isotopically heavy O2 as a source of atmospheric O3 Photodissociation of isotopically heavy O2 as a source of atmospheric O3

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..251c&link_type=abstract

Geophysical Research Letters, vol. 7, Apr. 1980, p. 251-254.

Physics

11

Atmospheric Chemistry, Oxygen Isotopes, Ozone, Photodissociation, Oxygen Production, Reaction Kinetics, Schumann-Runge Bands, Solar Radiation

Scientific paper

(O-18)(O-16) is the sixth most abundant gas in the atmosphere after (N-14)(N-14), (O-16)(O-16), Ar, (N-15)(N-14) and H2O. From available data on line positions in the Schumann-Runge (S-R) bands (175 to 205 nm) of (O-18)(O-16) its atmospheric photodissociation rates are estimated. In the high stratosphere and mesosphere this proposed source of O and O3 could be significant compared to photodissociation of (O-16)(O-16) although the estimates are subject to several uncertainties that are discussed. The transmission of solar radiation is calculated through the S-R bands of (O-18)(O-16) and (O-16)(O-16) with transmission functions averaged over individual S-R bands.

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