Study the subtle cancellation effects that lead to the reversal of the dominant polarity at the poles (Wang et al., 1989; Sheeley, 1991; Makarov et al., 2003). Studies of convective, rotational and meridional flows. Local helioseismology of polar regions (Gizon and Birch, 2005). MDI-like medium-l program (see Löptien et al., 2014). By which physical processes is magnetic flux at the poles removed? How does the cancellation process at the poles differ from cancellation at lower latitudes? Are there different rates?

Relevant SOOPs: