Método para la estimación de radiación ultravioleta a partir de registros de radiación solar global

Abstract

Se describe un método que permite la estimación de intensidad de radiación ultraviolcta a partir de registros de radiación global diaria, y se muestran los cálculos para dos estaciones de la zona atlántica en Costa Rica.

The ultraviolet (UV) atmospheric radiation (wavelength 0.3 to 0.4 um) is responsible of photochemical reactions such as the decomposition of plastics and color paintings, the ozone layer formation, the activation of bacteries and enzimes, skin cancers and pigmentation. Its low intensity and high variability make its measurement very delicate, in consequence UV radiation is not measured routinely in ordinary climatological stations. Studies from several scientists show that the UV fraction in the global solar radiation spectrum varies between O and 6 % . Based in such studies, the diurnal oscillation of UV radiation intensity throughout the year is estimated at two sites in Costa Rica. The UV radiation over a horizontal surface at 10° N under a cloudless sky with transmissivity 0.6 is also calculated as a potential value.