The processes of transport of arid aerosols under the conditions of developed convection are studied theoretically. The aerosols are wind-driven into the atmosphere due to release of soil particles from bare soil. Further, they ascend due to convection and turbulence. The calculated results are presented for one-dimensional (ignoring convection), two-dimensional, and three-dimensional Large-Eddy-Simulation models (LES) that reproduce convective structures with the scales large than or equal to 100 m.