  Various models of solar sub-surface stratification are tested in the global
EULAG-MHD solver to simulate diverse regimes of near-surface convective
transport. Sub- and superadiabacity are altered at the surface of the model ($
r > 0.95~R_{\odot}$) to either suppress or enhance convective flow speeds in an
effort to investigate the impact of the near-surface layer on global dynamics.
A major consequence of increasing surface convection rates appears to be a
significant alteration of the distribution of angular momentum, especially
below the tachocline where the rotational frequency predominantly increases at
higher latitudes. These hydrodynamic changes correspond to large shifts in the
development of the current helicity in this stable layer ($r<0.72R_{\odot}$),
significantly altering its impact on the generation of poloidal and toroidal
fields at the tachocline and below, acting as a major contributor towards
transitions in the dynamo cycle. The enhanced near-surface flow speed manifests
in a global shift of the toroidal field ($B_{\phi}$) in the butterfly diagram
-- from a North-South symmetric pattern to a staggered anti-symmetric
emergence.
