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Study of the effect of different type of aerosols on UV-B radiation from measurements during EARLINET

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Atmos. Chem. Phys., 4, 307–321, 2004 SRef-ID: 1680-7324/acp/2004-4-307 Atmospheric Chemistry and Physics Study of the effect of different type of aerosols on UV-B radiation from measurements during EARLINET D. S. Balis1, V. Amiridis1, C. Zerefos2, A. Kazantzidis1, S. Kazadzis1, A. F. Bais1, C. Meleti1, E. Gerasopoulos1, A. Papayannis3, V. Matthias4,*, H. Dier5, and M. O. Andreae6 1Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece 2Laboratory of Climatology and Atmospheric Environment, University of Athens, Greece and Foundation for Biomedical Research of the Academy of Athens, Greece 3National Technical University of Athens, Greece 4Max Planck Institute for Meteorology, Hamburg, Germany 5German Weather Service, Meteorological Observatory Lindenberg, Germany 6Max Planck Institute for Chemistry, P.O. Box 3060, D-55020 Mainz, Germany *now at: GKSS Research Center, Max-Planck-Strasse 1, 21502 Geesthacht, Germany Received: 8 July 2003 – Published in Atmos. Chem. Phys. Discuss.: 2 September 2003 Revised: 24 December 2003 – Accepted: 23 January 2004 – Published: 17 February 2004 Abstract. Routine lidar measurements of the vertical distri- bution 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 EAR- LINET project since 2000. Co-located spectral and broad- band solar UV-B irradiance measurements, as well as total ozone observations, were available whenever lidar measure- ments were obtained. From the available measurements sev- eral cases could be identified that allowed the study of the ef- fect of different types of aerosol on the levels of the UV-B so- lar irradiance at the Earth’s surface. The TUV radiative trans- fer model has been used to simulate the irradiance measure- ments, using total ozone and the lidar aerosol data as input. From the comparison of the model results with the measured s

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