Erythemal ultraviolet irradiance in Córdoba, Argentina

GUSTAVO G. PALANCAR; BEATRIZ M. TOSELLI

ATMOSPHERIC ENVIRONMENT

Elsevier

Lugar: Amsterdam; Año: 2002 vol. 36 p. 287 - 287

1352-2310

iologically active solar Ultraviolet-B radiation (UVery; 280–315 nm) is monitored in Córdoba, Argentina (31º 24´ S, 64º 11´ W, 400 m a.s.l) using the Yankee Environmental Systems (YES) pyranometer, model UVB-1. Measurements of the solar broadband UV-B irradiances are presented for the period of November 1998–December 1999. The site selected for the measurements represents semi-urban conditions and is along the most frequent wind direction (NE–SW) with reference to downtown, following the direction of prevailing winds. For clear sky days, the measurements are in good agreement with results of a radiative transfer model. However, examination of the record of solar ultraviolet measurements showed substantial reduction of the UV-B radiation on days with high levels of air pollution, which are associated with high concentration of particulate matter. Particulate matter is the only pollutant that surpasses the air quality standard several times during the year in Córdoba City. In this work,