Bald patches (green circles) computed from the NLFFF field model. Dark red circles represent the footpoints of the bald patch field lines. Magenta/cyan solid lines denote the contours of the positive/negative polarity. The olive-green solid line indicates the polarity inversion line, where all the bald patches are located. The blue circle in this figure is the same as shown in Fig. 5 and marks the region from where Jet 2 is launched.