Figure 1
From: Triggering The Birth of New Cycle’s Sunspots by Solar Tsunami
Top frame (a) shows observational time-latitude diagram of extended solar cycle in which Ca II K network bright elements are plotted in white-shades, and superimposed on that is the sunspot cycle in green scatter-plot; middle frame (b) (regenerated from McIntosh et al. 2014) shows data-inspired representation of migration of the activity band during an extended cycle; bottom frames (c,d,e) depict, in each hemisphere, the configuration of oppositely-directed double toroidal magnetic bands in the Sun’s shear-layer (tachocline, denoted by solid gray sphere) during different phases of the extended solar cycle. White mesh-surface in the outer sphere denotes the surface of the Sun. Blue/faint-blue indicates negative (azimuthally opposite to the direction of rotation) and red/faint-red positive (along the direction of rotation).
