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| Titel |
Six years of total ozone column measurements from SCIAMACHY nadir observations |
| VerfasserIn |
C. Lerot, M. Roozendael, J. Geffen, J. Gent, C. Fayt, R. Spurr, G. Lichtenberg, A. Bargen |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 2, no. 1 ; Nr. 2, no. 1 (2009-04-07), S.87-98 |
| Datensatznummer |
250000430
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| Publikation (Nr.) |
 copernicus.org/amt-2-87-2009.pdf |
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| Zusammenfassung |
| Total O3 columns have been retrieved from six years of SCIAMACHY nadir UV
radiance measurements using SDOAS, an adaptation of the GDOAS algorithm previously developed
at BIRA-IASB for the GOME instrument. GDOAS and SDOAS have been implemented by the German
Aerospace Center (DLR) in the version 4 of the GOME Data Processor (GDP) and in version 3 of the SCIAMACHY
Ground Processor (SGP), respectively. The processors are being run at the DLR processing centre on behalf of
the European Space Agency (ESA). We first focus on the description of the SDOAS algorithm with particular
attention to the impact of uncertainties on the reference O3 absorption cross-sections. Second, the
resulting SCIAMACHY total ozone data set is globally evaluated through large-scale comparisons with
results from GOME and OMI as well as with ground-based correlative measurements. The various total
ozone data sets are found to agree within 2% on average. However, a negative trend of 0.2–0.4%/year
has been identified in the SCIAMACHY O3 columns; this probably originates from instrumental degradation
effects that have not yet been fully characterized. |
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