Atmospheric transport is the study of the physical processes governing the movement and dispersion of substances, including gases, aerosols, and particulate matter, within the Earth's atmosphere. This research field investigates mechanisms such as advection, diffusion, and turbulent mixing across various spatial and temporal scales, which are fundamental to understanding and predicting the global and regional distribution of atmospheric constituents crucial for air quality, climate dynamics, chemical cycles, and the fate of emissions or other trace substances.