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Production of O(¹D) from photolysis of O 3
Author(s) -
Michelsen H. A.,
Salawitch R. J.,
Wennberg P. O.,
Anderson J. G.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl02052
Subject(s) - stratosphere , photodissociation , quantum yield , wavelength , excited state , troposphere , yield (engineering) , ozone , absorption (acoustics) , analytical chemistry (journal) , atmospheric chemistry , materials science , physics , atomic physics , atmospheric sciences , chemistry , photochemistry , optics , meteorology , fluorescence , environmental chemistry , thermodynamics
We have used a model accounting for absorption by vibrationally and rotationally excited ozone (O 3 ) to examine published measurements of the quantum yield of O(¹D) and O 2 (¹Δ g ) from O 3 photolysis in the Huggins band (305–325 nm). We conclude that the quantum yield of O(¹D) is 0.2–0.3 for wavelengths between 312 and 320 nm at 298 K; in contrast, the JPL recommended quantum yield of O(¹D) is negligible in this wavelength region. We present a compilation of our results at temperatures and wavelengths relevant to atmospheric calculations. Production of O(¹D) from excited O 3 increases calculated concentrations of O(¹D) by up to 40% and OH by 15% for the troposphere and lower stratosphere.