Characterization of Spatio-Temporal Variability of Irradiation, Nebulosity and Aerosols Optical Depth in 10˚ North-20˚ North African Band

This work concerns the 10? North, 20? North African band. Area renowned for having some of poorest countries in world. It is also home to Sahelian strip and part Sahara. The this zone have a relatively low electrification rate compared enlightened country. To solve problem, these want turn renewable energies such as photovoltaics (renewable energy obtained through solar radiation). Therefore, understanding behavior irradiation cloudiness 10 - 20 band becomes necessary. application empirical orthogonal functions different cloud layers reveals seasonality latter, particular first modes (EOF1). Indeed, by filtering time space isolate radiation cloudiness, EOF1 expresses respectively 94.3% variation descending clear sky Note 65.7% global radiation, 54.4% at 450 hPa, 69.6% between 800 hPa 76.6% 61.4% total cloudiness. These results allow us say that we generally good sunshine over several months, with little cover However, since considered be main aerosol emission source zones, it important their temporal consideration optical depth. By doing wavelet analysis on depth data from Dakar Banizoumbou, note average dust presence spectrum entire period 1997 2019 two stations slight shift peaks maximum observed value. A sign there strong area should taken into account any photovoltaic installation area.