Characterization of West African Jet Streams and Their Association to ENSO Events and Rainfall in ERA-Interim 1979–2011
Figure 6
(a) Monthly 250 mb zonal wind (top) wavelet power spectrum using Morlet wavelet (middle), global wavelet power spectrum (side), and scale averaged wavelet power for a 2–8 year band (bottom). (b) Monthly 500 mb zonal wind (top) wavelet power spectrum using Morlet wavelet (middle), global wavelet power spectrum (side), and scale averaged wavelet power for a 2–8 year band (bottom) (1979–2011). The thick contour enclosed regions are greater than 90% confidence for a red-noise process. The thin solid line indicates the “cone of influence,” where edge effects become important.
