Wind changes direction from day to night and vice versa because of a phenomenon known as the land-breeze and sea-breeze. During the day, the land surface heats up more quickly than the ocean surface due to differences in specific heat. This causes the air above the land surface to heat up and rise, while the cooler and denser air over the ocean surface flows towards the land as the sea-breeze.
At sunset, the land surface cools down more quickly than the ocean surface, causing the air above the land to cool and sink. This creates a high-pressure area over the land and a low-pressure area over the ocean. The air flows from high to low pressure, and therefore the wind direction reverses, forming a land breeze.
Therefore, the shift in wind direction from day to night and vice versa is caused by the difference in heating and cooling rates between the ocean and the land surface.
Why does the wind reverse direction when it changes from day to night, and again when it changes from night to day
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1 answer