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| Titel |
Stratospheric ozone trends and variability as seen by SCIAMACHY from 2002 to 2012 |
| VerfasserIn |
C. Gebhardt, A. Rozanov, R. Hommel, M. Weber, H. Bovensmann, J. P. Burrows, D. Degenstein, L. Froidevaux, A. M. Thompson |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 2 ; Nr. 14, no. 2 (2014-01-24), S.831-846 |
| Datensatznummer |
250118308
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| Publikation (Nr.) |
 copernicus.org/acp-14-831-2014.pdf |
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| Zusammenfassung |
Vertical profiles of the rate of linear change (trend) in the altitude range
15–50 km are determined from decadal O3 time series obtained from
SCIAMACHY1/ENVISAT2
measurements in limb-viewing geometry. The trends are calculated by using a
multivariate linear regression. Seasonal variations, the quasi-biennial
oscillation, signatures of the solar cycle and the El Niño–Southern
Oscillation are accounted for in the regression. The time range of trend
calculation is August 2002–April 2012. A focus for analysis are the zonal
bands of 20° N–20° S (tropics), 60–50° N, and
50–60° S (midlatitudes). In the tropics, positive trends of up to
5% per decade between 20 and 30 km and negative trends of up to
10% per decade between 30 and 38 km are identified. Positive O3
trends of around 5% per decade are found in the upper stratosphere in
the tropics and at midlatitudes. Comparisons between SCIAMACHY and EOS
MLS3 show
reasonable agreement both in the tropics and at midlatitudes for most
altitudes. In the tropics, measurements from OSIRIS4/Odin and SHADOZ5 are also analysed. These yield rates of
linear change of O3 similar to those from SCIAMACHY. However, the
trends from SCIAMACHY near 34 km in the tropics are larger than MLS and
OSIRIS by a factor of around two.
1 SCanning Imaging Absorption spectroMeter for Atmospheric
CHartographY
2 European environmental research satellite
3 Earth Observing System (EOS) Microwave Limb Sounder (MLS)
4 Optical Spectrograph and InfraRed Imager System
5 Southern Hemisphere ADditional OZonesondes |
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