One-column vertical turbulent mixing model for the atmospheric convective layer

Assuming that in the atmospheric convective layer different size large-scale eddies transport the fluid across finite distances and small eddies mix it simultaneously, a simple one-column vertical turbulent mixing model was designed. The numerical solution is based on the operator splitting method, applied to decompose the advection-like and the diffusion-like processes. The designed model was tested for bottom-up and top-down diffusion processes.