Question

what do you understand by air pressure and classify 3 types wind system​

Answer 1

Answer:

The pressure exerted by air is called air pressure

Answer 2

Trade Winds

The bulk of air mass movement and transfer of solar heat energy occurs in the Hadley circulation cells located directly north and south of the equator. The sun warms the tropical ocean and causes evaporation of seawater into water vapor in the air. At the equator, hot air saturated with water vapor, a low-pressure system, rises and moves at a high altitude toward the North and South Poles. As the water vapor rises it forms clouds. This is why the tropics get a lot of rain

Prevailing Winds

The north-to-south movement of air masses, combined with the deflection of the Coriolis effect, creates general surface wind patterns across the surface of the earth. Prevailing winds are the predominant surface winds in an area. Prevailing winds move in one direction. Winds that we feel and that interact with oceans are Earth’s surface winds. However, there are also high-altitude winds that stretch from the poles to equator that we are not generally aware of at the surface.

Polar Easterlies

At each pole, a cold polar air mass creates a region of high air pressure. The rotational speed of the polar air mass as it travels towards the equator is slower than the rotational speed of the land and water beneath it. The cold air mass cannot keep up with the rotating earth. Therefore, air flowing from the North Pole towards the equator produces cold, surface-level winds that blow from the northeast toward the southwest. These winds are called the polar easterlies. Winds are named by the direction from which they blow.

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