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Isotopic composition of stratospheric ozone

Liang, Mao-Chang and Irion, Fredrick W. and Weibel, Jason D. and Miller, Charles E. and Blake, Geoffrey A. and Yung, Yuk L. (2006) Isotopic composition of stratospheric ozone. Journal of Geophysical Research D, 111 (D2). Art. No. D02302. ISSN 0148-0227.

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We present a kinetic calculation for the isotopic composition of stratospheric ozone. The calculated enrichments of ^(49)O_3 and ^(50)O_3 are in agreement with atmospheric measurements made at midlatitudes. Integrating the kinetic fractionation processes in the formation and photolysis of ozone, we obtain enrichments of ∼7.5–10.5 and ∼7.5–12.5% (referenced to atmospheric O_2) for δ^(49)O_3 and δ^(50)O_3, respectively, at altitudes between 20 and 35 km; the photolysis in the Hartley band of ozone is responsible for the observed altitude variation. The overall magnitude of the ozone enrichments (∼10%) is large compared with that commonly known in atmospheric chemistry and geochemistry. The heavy oxygen atom in ozone is therefore useful as a tracer of chemical species and pathways that involve ozone or its derived products. For example, the mass anomalies of oxygen in two greenhouse gases, CO_2 and N_2O, are likely the consequences of the transfer of heavy oxygen atoms from ozone.

Item Type:Article
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URLURL TypeDescription Information
Liang, Mao-Chang0000-0002-5294-9344
Miller, Charles E.0000-0002-9380-4838
Blake, Geoffrey A.0000-0003-0787-1610
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 2006 The American Geophysical Union. Received 8 June 2005; Revised 23 September 2005; Accepted 24 October 2005; Published 18 January 2006. Special thanks to Yi-Qin Gao for helping us on the ozone formation model.We also thank Mimi Gerstell, Jack Margolis, Run-Lie Shia, and Geoff Toon for their helpful comments. This work was supported by an NSF grant ATM-9903790.
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Issue or Number:D2
Record Number:CaltechAUTHORS:20140822-142117797
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Official Citation:Liang, M.-C., Irion, F. W., Weibel, J. D., Miller, C. E., Blake, G. A., & Yung, Y. L. (2006). Isotopic composition of stratospheric ozone. Journal of Geophysical Research: Atmospheres, 111(D2), D02302. doi: 10.1029/2005jd006342
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48823
Deposited By: Joanne McCole
Deposited On:22 Aug 2014 22:30
Last Modified:09 Mar 2020 13:19

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