Wavelet Analysis of the Interconnection between Atmospheric Aerosol Types and Direct Irradiation over Cameroon

Figure 8

Wavelet coherence between the monthly average of DNI and SS time series (2005–2019). Areas of statistical significance are circled in black; the area outside the cone of influence has no statistical significance. The relative phase dependence is indicated by arrows (antiphase as oriented toward the left, and DNI in advance of phase to SS as arrows pointed upward).