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Main Title Isotopic Exchange between Carbon Dioxide and Ozone via O((sup 1)D) in the Stratosphere.
Author Yung, Y. L. ; DeMore, W. B. ; Pinto, J. P. ;
CORP Author California Inst. of Tech., Pasadena. ;Jet Propulsion Lab., Pasadena, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.;National Aeronautics and Space Administration, Washington, DC.
Publisher c1991
Year Published 1991
Report Number CONTRIB-4889; EPA-R-816418 ;EPA-9D4-25-NALX; EPA/600/J-91/027;
Stock Number PB91-183384
Additional Subjects Atmospheric chemistry ; Stratosphere ; Carbon dioxide ; Ozone ; Isotopic exchange ; Molecular energy levels ; Reaction kinetics ; Photochemical reactions ; Air pollution ; Troposphere ; One-dimensional calculation ; Mathematical models ; Reprints ; Chemical reaction mechanisms
Library Call Number Additional Info Location Last
NTIS  PB91-183384 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
The authors propose a novel mechanism for isotopic exchange between CO2 and O3 via O ((1)D) + CO2 -> CO3 followed by CO3 -> CO2 + O((3)P). A one-dimensional model calculation shows that the mechanism can account for the enrichment in 18O in the stratospheric CO23 observed by Gamo et al. (1989), using the heavy O3 profile observed by Mauersberger (1981). The implication of the mechanism for other stratospheric species and as a source of isotopically heavy CO2 in the troposphere are briefly discussed.