  The Babcock-Leighton type of dynamo has received recent support in terms of
the discovery in the observational records of systematic cycle-to-cycle
variations in the tilt angle of sunspot groups. It has been proposed that these
variations might be the consequence of the observed inflow into the active
region belt. Furthermore simulations have shown that such inflows restrict the
creation of net poloidal flux, in effect acting to quench the alpha effect
associated with the Coriolis force acting on rising flux tubes. In this paper
we expand on these ideas.
