The IMF Bz used in this simulation. The transitions occur linearly in 2 and 4 minutes, respectively. The green box on the nightside magnetosphere is the simulation box of our previous semiglobal simulations. An enlargement of the previous slide. Northern hemisphere ionospheric plane.
Horizontal current is shown with small arrows.
The density is the arrows has been reduced from the actual ionospheric grid point density to make the figure easier to view. Enlargement of the previous slide.