Articles | Volume 15, issue 4
Atmos. Chem. Phys., 15, 1901–1912, 2015
https://doi.org/10.5194/acp-15-1901-2015
Atmos. Chem. Phys., 15, 1901–1912, 2015
https://doi.org/10.5194/acp-15-1901-2015

Research article 24 Feb 2015

Research article | 24 Feb 2015

An estimation of the 18O / 16O ratio of UT/LMS ozone based on artefact CO in air sampled during CARIBIC flights

S. Gromov and C. A. M. Brenninkmeijer

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Cited articles

Assonov, S. S. and Brenninkmeijer, C. A. M.: A new method to determine the 17O isotopic abundance in CO2 using oxygen isotope exchange with a solid oxide, Rapid Commun. Mass Spectrom., 15, 2426–2437, https://doi.org/10.1002/rcm.529, 2001.
Assonov, S. S. and Brenninkmeijer, C. A. M.: A redetermination of absolute values for 17R_VPDB-CO2 and 17R_VSMOW, Rapid Commun. Mass Spectrom., 17, 1017–1029, https://doi.org/10.1002/Rcm.1011, 2003.
Assonov, S. S., Brenninkmeijer, C. A. M., Koeppel, C., and Röckmann, T.: CO2 isotope analyses using large air samples collected on intercontinental flights by the CARIBIC Boeing 767, Rapid Commun. Mass Spectrom., 23, 822–830, https://doi.org/10.1002/rcm.3946, 2009.
Bhattacharya, S. K., Pandey, A., and Savarino, J.: Determination of intramolecular isotope distribution of ozone by oxidation reaction with silver metal, J. Geophys. Res.-Atmos., 113, D03303, https://doi.org/10.1029/2006jd008309, 2008.
Brenninkmeijer, C. A. M.: Measurement of the abundance of 14CO in the atmosphere and the 13C/12C and 18O/16O ratio of atmospheric CO with applications in New Zealand and Antarctica, J. Geophys. Res.-Atmos., 98, 10595–10614, https://doi.org/10.1029/93JD00587, 1993.
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Short summary
We present observational data on δ18O(O3) from the UT/LMS, the region to date not covered by the ozone isotope composition measurements. It is to bridge the gap between the tropospheric (mostly surface) and stratospheric measurement data. We demonstrate an approach suitable for isotope mass-balance calculations (“Keeling plot”) in intricate cases, i.e. admixing of the (unknown) source in question to the reservoirs with (unknown) variable starting compositions.
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