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| Titel |
Geophysical validation of SCIAMACHY Limb Ozone Profiles |
| VerfasserIn |
E. J. Brinksma, A. Bracher, D. E. Lolkema, A. J. Segers, I. S. Boyd, K. Bramstedt, H. Claude, S. Godin-Beekmann, G. Hansen, G. Kopp, T. Leblanc, I. S. McDermid, Y. J. Meijer, H. Nakane, A. Parrish, C. Savigny, K. Stebel, D. P. J. Swart, G. Taha, A. J. M. Piters |
| 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 ; 6, no. 1 ; Nr. 6, no. 1 (2006-01-26), S.197-209 |
| Datensatznummer |
250003304
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| Publikation (Nr.) |
 copernicus.org/acp-6-197-2006.pdf |
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| Zusammenfassung |
| We discuss the quality of the two available SCIAMACHY limb
ozone profile products. They were retrieved with the University
of Bremen IFE's algorithm version 1.61 (hereafter IFE), and
the official ESA offline algorithm (hereafter OL)
versions 2.4 and 2.5. The ozone profiles were compared to
a suite of correlative measurements from ground-based lidar and
microwave, sondes, SAGE II and SAGE III (Stratospheric
Aerosol and Gas Experiment).
To correct for the expected Envisat pointing errors, which have not
been corrected implicitly in either of the algorithms, we applied a
constant altitude shift of -1.5 km to the SCIAMACHY ozone
profiles.
The IFE ozone profile data between 16 and 40 km are biased
low by 3-6%. The average difference profiles have a typical
standard deviation of 10% between
20 and 35 km.
We show that more than 20% of the SCIAMACHY official ESA offline (OL) ozone
profiles version 2.4 and 2.5 have unrealistic ozone values, most of these are
north of 15° S. The remaining OL profiles compare well to correlative
instruments above 24 km. Between 20 and 24 km, they underestimate
ozone by 15±5%. |
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