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| Titel |
Improved stratospheric aerosol extinction profiles from SCIAMACHY: validation and sample results |
| VerfasserIn |
C. von Savigny, F. Ernst, A. Rozanov, R. Hommel, K.-U. Eichmann, V. Rozanov, J. P. Burrows, L. W. Thomason |
| 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 ; 8, no. 12 ; Nr. 8, no. 12 (2015-12-15), S.5223-5235 |
| Datensatznummer |
250116723
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| Publikation (Nr.) |
 copernicus.org/amt-8-5223-2015.pdf |
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| Zusammenfassung |
| Stratospheric aerosol extinction profiles have been retrieved from
SCIAMACHY/Envisat measurements of limb-scattered solar radiation.
The retrieval is an improved version of an algorithm presented
earlier. The retrieved aerosol extinction profiles are compared to
co-located aerosol profile measurements from the SAGE II solar
occultation instrument at a wavelength of 525 nm. Comparisons were
carried out with two versions of the SAGE II data set (version 6.2
and the new version 7.0). In a global average sense the SCIAMACHY
and the SAGE II version 7.0 extinction profiles agree to within
about 10 % for altitudes above 15 km. Larger relative differences
(up to 40 %) are observed at specific latitudes and altitudes. We
also find differences between the two SAGE II data versions of up
to 40 % for specific latitudes and altitudes, consistent with
earlier reports. Sample results on the latitudinal and temporal
variability of stratospheric aerosol extinction and optical depth
during the SCIAMACHY mission period are presented. The results
confirm earlier reports that a series of volcanic eruptions is
responsible for the increase in stratospheric aerosol optical
depth from 2002 to 2012. Above about an altitude of 28 km, volcanic
eruptions are found to have negligible impact in the period 2002–2012. |
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