Snapshots of the vertical velocities in the photosphere at z = 0 km (top row), in the chromosphere at z = 1 Mm (middle row), and in a vertical cut at an arbitrary horizontal location (bottom row). Vertical lines at the top and middle panels mark the location of the slice from the bottom panel. Horizontal lines at the bottom panels mark the heights where the velocities at the upper panels are shown. Panels from left to right are for Dyn₅, Dyn₁₀, and Dyn₂₀ simulations, correspondingly.