Vertical sections of the temperature fluctuations T′ (left), vertical velocity v_z (middle), and vertical magnetic field B_z (right). To enhance the visibility of the perturbations, each quantity is scaled by its mean rms value at each height z. The sections are taken from the simulation MHD_512 at t = 5000 s and y = 2.34 Mm. Black dotted lines indicate the boundaries of the convection zone.