What occurs when an air mass passes over a warm surface?

When an air mass passes over a warm surface, it is heated from below, which causes the air near the surface to rise. This process initiates convective currents, as the warm air becomes less dense and begins to ascend. As the warm air rises, cooler air moves in to replace it, creating a cycle of rising and falling air known as convection. This is a fundamental concept in meteorology, where surface heating can significantly influence weather patterns and atmospheric stability.

Convective currents are essential in the development of clouds and precipitation, as they facilitate the vertical movement of moisture-laden air. This process is responsible for various weather phenomena, including thunderstorms and other forms of convective activity.