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| Titel |
MIPAS observations of the ozone isotope effect |
| VerfasserIn |
Bastiaan Jonkheid, Thomas Röckmann, Christof Janssen, Gabriele Stiller, Thomas von Clarmann |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250098507
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| Publikation (Nr.) |
 EGU/EGU2014-14189.pdf |
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| Zusammenfassung |
| Stratospheric ozone is highly (5-15 %) enriched in the stable isotopes 17O and 18O compared
to atmospheric O2. Moreover, this enrichment does not follow the usual mass dependent
fractionation law, but has a so-called mass independent signature where both heavy isotopes
are approximately equally enriched. Presented here are satellite observations of the
enrichments of the symmetric and asymmetric isotopomers of 50O3, taken with the MIPAS
high-resolution (Δν = 0.035cm-1) spectrometer onboard Envisat. These observations
extend to altitudes that previous measurements carried out by balloon experiments could not
reach, while the global coverage of the data ensures that meaningful seasonal and zonal
means can be derived.
The retrieved MIPAS enrichments show satisfactory agreement in both magnitude and
vertical trends with balloon observations where available. The satellite observations provide
data on isotopic composition up to altitudes of 55 km, well beyond the extent of balloon data.
Trends in different latitude bands are also visible. The MIPAS ozone isotope data provide a
valuable addition to the in-situ and balloon based remote sensing data on the ozone isotope
effect. |
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