Ultraviolet radiation studies in Córdoba, Argentina

GUSTAVO G. PALANCAR; VIRGINIA P. MACCHI; BEATRIZ M. TOSELLI

Proceedings of the 2nd SPARC General Assembly Stratospheric Processes and their Role in Climate

Año: 2001 vol. 1 p. 15 - 15

span lang="en" style="font-size: 11pt;">Ultraviolet-B radiation (UV-B, 280-315 nm) is monitored in Córdoba, Argentina (31o24´ S, 64o11´ W, 400 meters above sea level) using the Yankee Environmental Systems (YES) pyranometer, model UVB-1. Measurements of solar broad band UV-B irradiances were conducted between November 1998 and December 1999. These are, to our knowledge, the first measurements obtained in Córdoba with a high quality pyranometer. The site selected for the measurements represents semi-urban conditions and is along the most frequent wind direction (NE-SW). For clear sky days, the measurements are in good agreement with results of a radiative transfer model.  However, this study shows substantial reduction of UV-B radiation on days with high levels of air pollution. The maximum UV irradiance measured was 2.61 Wm-2. In this work we investigate the seasonal variation of UV-B radiation t