Average radial profile of local enstrophy (a) in simulations wide2D and wide3D, (b) in simulations deep2D and deep3D, (c) in simulations short2Da and short3Da, (d) in simulations short2Db and short3Db. Shaded areas indicate one standard deviation above and below the time-averaged line. The heavy vertical line indicates the bottom of the convection zone determined by the Schwarzschild criterion.