  The buoyancy force is the cause of ordered vertical movements in the
atmosphere, therefore, the analysis of the causes and conditions of its
formation is important not only for the formation of convective clouds, but
also for understanding all atmospheric transport processes. Due to the absence
of rigid boundaries inside the gas, a horizontal pressure gradient in a static
state cannot exist in the allocated volume. The pressure inside the allocated
volume with a different density is equal to the external pressure and the
intra-mass buoyancy force, according to its definition, is formally zero. The
observed force of intra-mass buoyancy arises due to the difference in vertical
pressure gradients in media with different densities. In this case, the
buoyancy force is volumetric, and its value corresponds to generally accepted
ratios.
