Time evolution of magnetic field and velocity. Shown are the snapshots at t = 12.9 yr (from (a) to (e)), t = 14.9 yr (from (f) to (j)), t = 17.9 yr (from (k) to (o)), t = 19.9 yr (from (p) to (t)) in Fig. 9. The mollweide projections in the first and second columns show the radial field B_r at the surface r = 0.985 R_⊙ and longitudinal field B_ϕ near the base of the convection zone r = 0.715 R_⊙, respectively. The meridional plot in the third column represents the mean toroidal field (color scales) and poloidal field (contours). The meridional plots in the fourth and fifth columns represent the mean differential rotation and streamfunction of the meridional circulation, respectively. An animation of this figure is available online.