Using the optical properties of aerosols from the AERONET database to calculate surface solar UV-B irradiance in Córdoba, Argentina. Comparison with measurements.

GEORGINA G. ANDRADA; GUSTAVO G. PALANCAR; BEATRIZ M. TOSELLI

Elsevier

Año: 2008 vol. 42 p. 6011 - 6011

he main purpose of this study was to perform an evaluation of the particles optical parameters influence on surface solar UV-B (280-315 nm) irradiance in Córdoba, Argentina. To achieve this objective UV-B irradiance dataset, AERONET (AErosol RObotic NETwork) database, and TUV (Tropospheric Ultraviolet and Visible) model were used to analyze the effects of aerosols on surface irradiance on cloudless days during specific days of winter and spring of the period 1999-2006. Together with a direct observer, total irradiance (300-3000 nm) measurements were used as an ancillary tool to verify the cloudless condition. Every year, during this period, important reductions in surface irradiance are observed due to the aerosol load. Aerosols were incorporated in the model through the aerosol optical depth at 340 nm, the single scattering albedo at 440 nm, and the asymmetry parameter at 440 nm, all of them provided by AERONET Córdoba-CETT site. These factors vary from near to zero up to 3.2, from 0