(a) Differential rotation (solid contours correspond to faster rotation, dashed contours to slower rotation than the core of the Sun); (b) stream function of meridional flow (solid contours correspond to a counter clockwise flow). The amplitude of differential rotation is 30% of the core rotation rate; the amplitude of the meridional flow is 11 m s⁻¹ (2 m s⁻¹) at the top (bottom) of the convection zone.