High-pressure systems are caused by the sinking motion of air in the atmosphere. As air sinks, it becomes compressed and warms up, creating an area of higher pressure. This sinking motion prevents air from rising and forming clouds, resulting in clear skies and calm weather conditions associated with high-pressure systems. Wind typically flows outward from a high-pressure system in a clockwise direction in the Northern Hemisphere and in a counterclockwise direction in the Southern Hemisphere.
