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How are typhoons formed?
Typhoon it's just a tropical cyclone It occurs in areas where the pressure is too low. In practice it is the same than a hurricane, what happens is that it is called a typhoon if it occurs in the western pacific zone. In the event that it occurs in the eastern Pacific it is called a hurricane.
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Studies show that a typhoon is created, when an atmospheric wave found in the Pacific rotates following the planet's own rotation. This will generate high pressures on the outside and low pressures in the middle. If this phenomenon continues to rotate at a speed of about 120 km / h it can be said that it is a typhoon.
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They occur over warm seas and bring powerful thunderstorms, heavy rainfall, and storm force winds. The name "tropical cyclone" is scientific. Depending on the part of the world, they are simply called hurricanes (United States and Latin America) and typhoons (Asia and Australia).
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Tropical cyclones are "fed" with warm and humid air. They form over the ocean due to hot temperatures and water that evaporates from the surface of the ocean. Warm humid air rises, creating a "deficit" of air near the surface. In its place new air comes, which also heats up and rises. This process takes up more and more territory. Due to the constant flow of humid and warm air, cloudiness is intensely formed, precipitation falls, and the wind increases.
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As air warms over the ocean, it expands, becomes lighter and rises. Other local winds blow in to replace the air that has risen, which in turn warms and also rises. The rising air contains a huge amount of moisture evaporated from the ocean surface.
As it rises the air cools, and the moisture condenses to form huge clouds about 10 km up in the troposphere.
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More warm air rushes in and rises, drawn in by the draft above. The rising drafts of air carry moisture high into the atmosphere which causes the clouds to become very thick and heavy.
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Condensation then releases the latent heat energy stored in the water vapour, providing the typhoon with more power. This creates a self-sustaining heat cycle.
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The force created by the earth¡¯s rotation on a tilted axis, (the Coriolis Effect), causes rising currents of air to spiral around the centre of the typhoon. It¡¯s at this stage that the typhoon matures, and the eye of the storm is created.
As the air rises and cools, some of the dense air descends to form the clear still eye as the typhoon rages around it.
The eye wall where the wind is strongest behaves like a whirling cylinder, (typhoons rotate anti-clockwise in the northern hemisphere).
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As warm ocean water feeds it heat and moisture the typhoon usually continues to enlarge.
A tropical cyclone loses its strength when it is no longer in contact with the warm and humid surface of the ocean. For example, if it passes over a cold current, or goes to land, it will weaken and begin to collapse.
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