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Isotopic exchange between carbon dioxide and ozone via O( 1 D) in the stratosphere
Author(s) -
Yung Yuk L.,
DeMore W. B.,
Pinto Joseph P.
Publication year - 1991
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 - 10.1029/90gl02478
Subject(s) - stratosphere , ozone , troposphere , atmospheric sciences , carbon dioxide , ozone layer , environmental science , isotope , carbon fibers , δ18o , atmosphere (unit) , environmental chemistry , chemistry , stable isotope ratio , meteorology , physics , materials science , nuclear physics , organic chemistry , composite number , composite material
We propose a novel mechanism for isotopic exchange between CO 2 and O 3 via O( 1 D) + CO 2 → CO 3 * followed by CO 3 * → CO 2 + O( 3 P). A one‐dimensional model calculation shows that this mechanism can account for the enrichment in 18 O in the stratospheric CO 2 observed by Gamo et al. [1989], using the heavy O 3 profile observed by Mauersberger [1981]. The implications of this mechanism for other stratospheric species and as a source of isotopically heavy CO 2 in the troposphere are briefly discussed.