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| Kazantzidis, A., Balis, D.S., Bais, A.F., Kazadzis, S., Galani, E., Kosmidis, E., Blumthaler, M. | [abstract]
Spectral measurements of global solar irradiance, obtained under cloud-free conditions during the SUSPEN campaign (July 1997) in Thessaloniki, Greece are compared with radiative transfer model calculations, showing an agreement to within ± 5% for wavelengths higher that 305nm. The uncertainties in the modeled spectra were analyzed with respect to the aerosol-related model input parameters (single-scattering albedo and asymmetry factor), which were not derivable from measurements. A range of single-scattering albedo values was used to investigate its impact on surface UV irradiance, through comparison of measurements with model calculations. It was found that a difference in the single-scattering albedo of 0.1 changes the model-to-measurement ratio by 7-14%, depending on solar zenith angle. Finally, an attempt was made to relate the estimated values of single-scattering albedo to wind direction and relative humidity, which control the origin and type of the aerosols in the area. | [keywords]
Aerosols; Atmospheric humidity; Irradiation; Scattering; Wind, Global solar irradiance, Atmospherics, aerosol; albedo; irradiance; radiative transfer; ultraviolet radiation | | Journal of the Atmospheric Sciences, 58 (12), pp. 1529-1539, 2001 | | http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0035875302&partnerID=40 |  back to publications list |
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