Distribución espacial de la radiación fotosintéticamente activa en Argentina

solar radiation is information often required for studying energy balance or the growth of a specific culture. although in general it is able to dispose of measured or estimated global irradiation data, information of photosynthetically active radiation (par) is not always available. taking into account an empirical relationship established between daily totals of par and global solar radiation (0.47), and the existence of charts with the distribution of monthly mean values of daily global irradiation in argentina, par monthly charts are presented in this work.