Features of the intra-mass buoyancy

TL;DR

This paper analyzes the nature of intra-mass buoyancy in the atmosphere, emphasizing its volumetric character and the role of vertical pressure gradients in different density media, crucial for understanding atmospheric transport and cloud formation.

Contribution

It clarifies the physical origin of intra-mass buoyancy, highlighting the importance of vertical pressure gradients rather than rigid boundaries, advancing atmospheric physics understanding.

Findings

Intra-mass buoyancy arises from vertical pressure gradients.

The buoyancy force is volumetric and depends on density differences.

Pressure inside a volume with different density equals external pressure.

Abstract

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.