研究目的
To develop the method for the estimation of global solar radiation in Tunisia, assess monthly global solar radiation using meteorology data for three stations, compare measured data with two different geostationary satellites imagery to validate the estimation, and reduce the uncertainty of using satellite imagery for long-term solar resource by validating the estimated data with those measured by the pyranometer from the meteorological station.
研究成果
The estimation of global solar radiation with satellite imagery did not exceed 15% error. The solar resource data estimated by the two different satellite imagery are close to pyranometric measurements performed by the three different meteorological stations in Tunisia. The unterannual variability in global horizontal irradiation and direct normal radiation can be used from Med-Atlas satellite imagery which represents a high-accuracy solar resource data.
研究不足
The measurement of solar radiation is a time-consuming and expensive operation. Full climate characterization may require several decades of measurements. The uncertainty in the spatial interpolation of ground station data depends on the distance between stations and local climatic conditions.
