Question:
In coastal area, wind current moves from sea towards the land during day but during night it moves from land to the sea. Discuss the reason.
Solution:
Air Movement in Coastal Areas: In coastal areas, there is a regular flow of cooler air from sea towards the land during the daytime. It is because during the daytime land gets heated faster than water. Reradiation from land heats the air above it. The hot air rises and creates an area of low pressure. Sea water is not heated so rapidly. Air above sea remains comparatively cool. It has a higher pressure as compared to air over land. Therefore, cooler air present over sea moves towards land where low pressure exists.