Estimating solar radiation and evapotranspiration using minimum climatological data

A procedure is introduced to estimate solar radiation and subsequently reference crop evapotranspiration using minimum climatological data. The paper describes a modification to an original equation that uses maximum and minimum temperature to estimate solar radiation and reference crop evapotranspiration. The proposed modification allows for the correction of errors associated with indirect climatological parameters affecting the local temperature range. The proposed modification also improves the accuracy of estimates of solar radiation from temperature.