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| Titel |
Study of the effect of different type of aerosols on UV-B radiation from measurements during EARLINET |
| VerfasserIn |
D. S. Balis, V. Amiridis, C. Zerefos, A. Kazantzidis, S. Kazadzis, A. F. Bais, C. Meleti, E. Gerasopoulos, A. Papayannis, V. Matthias, H. Dier, M. O. Andreae |
| 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 ; 4, no. 2 ; Nr. 4, no. 2 (2004-02-17), S.307-321 |
| Datensatznummer |
250001593
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| Publikation (Nr.) |
 copernicus.org/acp-4-307-2004.pdf |
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| Zusammenfassung |
| Routine lidar measurements of the vertical distribution of the aerosol extinction coefficient and the
extinction-to-backscatter ratio have been performed at Thessaloniki, Greece using a Raman lidar
system in the frame of the EARLINET project since 2000. Co-located spectral and broadband solar
UV-B irradiance measurements, as well as total ozone observations, were available whenever
lidar measurements were obtained. From the available measurements several cases could be
identified that allowed the study of the effect of different types of aerosol on the levels of the UV-B
solar irradiance at the Earth's surface. The TUV radiative transfer model has been used to simulate
the irradiance measurements, using total ozone and the lidar aerosol data as input. From the
comparison of the model results with the measured spectra the effective single scattering albedo
was determined using an iterative procedure, which has been verified against results from the 1998
Lindenberg Aerosol Characterization Experiment. It is shown that for the same aerosol optical
depth and for the same total ozone values the UV-B irradiances at the Earth's surface can show
differences up to 10%, which can be attributed to differences in the aerosol type. It is shown that the
combined use of the estimated single scattering albedo and of the measured
extinction-to-backscatter ratio leads to a better characterization of the aerosol type probed. |
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