What is an expected change in air currents from day to night?

The expected change in air currents from day to night is characterized by the shift from upward to downward flows. During the day, solar heating causes the ground to warm up, leading to the rise of warm air as it becomes less dense. This creates upward flows of air known as convection currents. As night falls, the ground cools, and the air near the surface also cools. The cooler air becomes denser and begins to sink, resulting in a predominance of downward air currents.

Understanding this transition is crucial in meteorology and can affect local weather patterns, including wind directions and temperature changes. This downward flow of cooler air can also result in a stabilization of the atmosphere at night, affecting cloud formation and the potential for fog or frost under certain conditions.