Wavelet coherence (a) between northern hemispheric total FAC intensity and V_p, and (b) between northern hemispheric total FAC intensity and N_CF. Wavelet coherence values are shown by the color bar at the right. The cone of influence, where edge effects might distort the results, is shown as lighter shades. The relative phase relationships (of FAC intensity with V_p and N_CF) are shown as arrows, horizontal right arrows indicating in-phase, horizontal left arrows indicating anti-phase. All data are processed into 30 min resolution so that they precisely coincide (in time) with each other.