Turbulent convection self-organises on large scales into circulation cells; an example of coherent structures in turbulent fluid flow. In the convective bounary layer (CBL), small-scale turbulence properties inside the surface layer and entrainment zone are modified by these large-scale circulations. The representation of this interaction remains a challenge for the modelling community due to past inability to capture the smallest scales of motion in the fully turbulent regime. We use direct numerical simulation to make headway on this problem and advance our understanding of the influence of large coherent structures on small-scale turbulence in the CBL.