Effects of meteorology and tropospheric aerosols on UV-B radiation: a 4-year study

GUSTAVO G. PALANCAR; BEATRIZ M. TOSELLI

ATMOSPHERIC ENVIRONMENT

Elsevier

Lugar: Amsterdam; Año: 2004 vol. 38 p. 2749 - 2749

1352-2310

roadband Ultraviolet-B (UV-B, 280–315 nm) and total (300–3000 nm) radiation measurements and calculations have been carried out in Córdoba City, Argentina (31º 240S, 64º 110 W, 470 m above sea level) between November 1998 and December 2002. UV-B measurements were carried out with a YES UVB–1 radiometer while calculations were performed using the tropospheric ultraviolet visible model (TUV 4.1). Total measurements were taken using a YES TSP-700 pyranometer and the calculations using a parameterization. The site selected for the measurements represents semi-urban conditions and is along the most frequent wind direction (NE–SW) with respect to the city center. For clear sky days, calculations showed a good agreement with measurements. However, this study showed a substantial reduction (up to 50%) in the UV-B radiation on days with high levels of aerosols. The default aerosol propertiesincluded in the model did not account for the observed reductions. A four-day-aerosol-loading epis