A high-resolution large-eddy simulation model has been used to investigate the effect of scale in surface inhomogeneities on the turbulence structure of the convective boundary layer (CBL). Surface heat fluxes were varied sinusoidally in two dimensions with wavelengths of 250,500 and 1000 m, corresponding to about 0.27 zI, 0.55 zi and l . l z i (zi is the boundary layer depth). The geostrophic ...