Example structure of BMRs per each hemisphere produced from our Babcock-Leighton α-effect model. Radial field at the solar surface is shown where red (blue) points represent positive (negative) B_r. The Solid black arrows denote the direction of the electro-motive-force, ℰ, defined by Eq. (22) with the appropriate Joy’s law. Positive (negative) toroidal field in the northern (southern) hemisphere is implicitly assumed near the base of the convection zone.