What does atmospheric pressure affect in weather systems?

Atmospheric pressure plays a critical role in determining wind patterns within weather systems. It influences the movement of air masses, which is essential for the formation of various weather phenomena. As air with different pressures interacts, it creates pressure gradients, leading to the movement of air from high-pressure areas to low-pressure areas, generating wind.

In meteorology, the differential in atmospheric pressure is fundamental to understanding weather changes, including the development of storms, rain patterns, and temperature changes. This movement of air is responsible for shaping local and global climates. The other options do not directly relate to atmospheric pressure's influence on weather systems; instead, they pertain to separate environmental processes, making them less relevant in this context.