Three-dimensional view of a simulation snapshot of the U-AD run. The grayscale image at the bottom shows temperature at −0.5 Mm, below the surface. Colored lines are magnetic field lines, the colors indicate the vertical magnetic field strength, where blue represents negative polarity, red indicates positive polarity, and yellow represents horizontal field. The gray contours at the upper part of the domain follow regions with the heating term log₁₀()=8. The movie showing the temporal evolution of the run is available online.