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| Titel |
Upper stratospheric ozone decrease events due to a positive feedback between ozone and the ozone dissociation rate |
| VerfasserIn |
G. R. Sonnemann, P. Hartogh |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 16, no. 3 ; Nr. 16, no. 3 (2009-06-19), S.409-418 |
| Datensatznummer |
250013191
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| Publikation (Nr.) |
 copernicus.org/npg-16-409-2009.pdf |
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| Zusammenfassung |
| Ozone measurements taken with a ground based microwave instrument at Lindau
(51.66° N, 10.13° E) over some years showed strong ozone
decrease events within the stratopause region, particularly during the
winter half-year. These events are characterized by a marked drop of the
ozone mixing ratio from two to three ppmv to less than half a ppmv in
extreme cases. Simultaneous water vapor measurements at the same place, also
carried out by a microwave instrument, showed a strong increase of its
mixing ratio and the temperature was also enhanced during these episodes.
The theoretical analysis brought evidence that these events result from a
positive feedback in the complex radiatively-chemical system between the
ozone column density and the ozone dissociation rate. |
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