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| Titel |
Solar occultation with SCIAMACHY: algorithm description and first validation |
| VerfasserIn |
J. Meyer, A. Bracher, A. Rozanov, A. C. Schlesier, H. Bovensmann, J. P. Burrows |
| 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 ; 5, no. 6 ; Nr. 5, no. 6 (2005-06-22), S.1589-1604 |
| Datensatznummer |
250002907
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| Publikation (Nr.) |
 copernicus.org/acp-5-1589-2005.pdf |
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| Zusammenfassung |
| This presentation concentrates on solar occultation measurements with the
spaceborne spectrometer SCIAMACHY in the UV-Vis wavelength range. Solar
occultation measurements provide unique information about the vertical
distribution of atmospheric constituents. For retrieval of vertical trace gas
concentration profiles, an algorithm has been developed based on the optimal
estimation method. The forward model is capable of simulating the extinction
signals of different species as they occur in atmospheric transmission
spectra obtained from occultation measurements. Furthermore, correction
algorithms have been implemented to address shortcomings of the tangent
height pre-processing and inhomogeneities of measured solar spectra. First
results of O3 and NO2 vertical profile retrievals have been validated
with data from ozone sondes and satellite based occultation instruments. The
validation shows very promising results for SCIAMACHY O3 and NO2 values
between 15 to 35km with errors of the order of 10% and 15%,
respectively. |
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