Oxygen isotope composition of stratospheric carbon dioxide

Details Oxygen isotope composition of stratospheric carbon dioxide Oxygen isotope composition of stratospheric carbon dioxide

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29l..23l&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 12, pp. 23-1, CiteID 1582, DOI 10.1029/2001GL014343

Physics

20

Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions, Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry

Scientific paper

Heavy oxygen isotope enrichment in stratospheric CO2 has been identified in the past as a direct result of the large O3 isotope anomaly though no simultaneous measurements are known. Results from 8 stratospheric balloon flights at two latitudes are reported that provide now a complete oxygen isotope analysis of both gases. An unambiguous, very tight correlation between enrichments of 17O and 18O in CO2 has been found. The large ratio δ17O/δ18O of 1.71 +/- 0.03 shows a faster transfer of 17O than of 18O into CO2 and establishes a standard throughout the lower and middle stratosphere between midlatitudes and high northern latitudes. Ozone isotope transfer can now be treated in models with reliable atmospheric data.

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