Where does wind come from? Detailed answer

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Where does wind come from? Detailed answer

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Where does wind come from?

Sometimes we go outside to enjoy the calm and clear weather. However, before we had gone a few steps, the wind suddenly picked up. Although we do not see it, we feel it perfectly on our hands and face, without having the slightest idea where it came from. Wind is the movement of air masses over the earth.

What makes air move? The answer to this question is always the same - temperature changes. When heated, the air expands, becomes lighter and rises. A stream of heavier cold air rushes in its place. This is the wind!

There are two types of winds: those related to the global wind system and local winds. The global wind system starts from the equator, where the sun heats the most. There, warm air, rising to great heights, is pushed towards the North and South Poles. After passing about a third of the way from the equator to the pole, it cools down and begins to descend again to the surface of the earth. Part of the air masses continues to move towards the poles, while the rest returns to the equator. Those winds that, as a rule, blow in the same direction all year round in a given region are called prevailing winds.

However, often in one place or another the wind blows in a completely different direction. This is caused by the interference of local winds. Local winds rise as a result of the arrival of cold air masses with high pressure or warm air masses with low pressure. As a rule, this lasts for several hours or days, after which the prevailing winds begin to blow.

Another reason for local winds is the diurnal temperature difference. This is especially noticeable on the seashore. During the day, cold air from the sea moves towards the land, and at night everything happens the other way around.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Where did the British fight the French during World War II?

After the armistice between France and Germany in 1940, Great Britain feared that the French fleet would fall under the control of the Germans, which could radically change the balance of power in the maritime theater of operations. On July 3, the British formation "H" approached the base of Mers-el-Kebir in Algiers, where part of the French Atlantic squadron had already begun to demobilize, and put forward an ultimatum. Among the options offered was to join the British fleet, either sail to American ports or simply scuttle the ships, but the French chose to take the fight. As a result, their losses amounted to about 1300 people and several ships, while the British lost only two pilots. In the future, the French sailors did not allow the transfer of the fleet to the Germans - for example, in 1942 they sank 77 ships while trying to capture them in the port of Toulon.

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