China Naming Network - Eight-character Q&A - Why is it sunny in typhoon eye area?

Why is it sunny in typhoon eye area?

A typhoon is a mass of rotating air with a low central pressure, and the air around it rotates rapidly in a counterclockwise direction. The low-level air flows to the low-pressure center while rotating, and the faster the air flows, the greater the wind speed.

it is usually called the eye of the typhoon in a circular area with an average diameter of about 4 kilometers. Because the air around the typhoon eye rotates too much, it is difficult for the outside air to enter the central area of the typhoon under the action of centrifugal force, so the typhoon eye area is like an isolated pipe surrounded by a cloud wall. The air in it hardly rotates and the wind is very weak.

the area about 1 kilometers outside the typhoon eye is a stormy area.

The air outside the eye area of typhoon whirls towards the center of low pressure. They carry a lot of water vapor, which rises around the eye area because it is not easy to enter, forming a large gray-black bloated and towering cloud layer, and it is raining cats and dogs. Downward flow appeared in the typhoon eye area, so the clouds dispersed and the twinkling stars could be seen at night. As shown in the satellite image of Typhoon rammasun No.5 this year, the weather in the eyes of typhoon is usually sunny to partly cloudy, so it appears as a small black dot on the satellite cloud image. But after the typhoon eye moves, the weather will become extremely bad again.

In the eyes of typhoons, many birds often appear. These countless seabirds, which were blown to the typhoon eye by the typhoon airflow, found a "safe haven" and sometimes flew far away with the movement of the typhoon.

Although the weather is fine in the eye of the typhoon, the waves at sea are very rough. This is because the air pressure in the center of the typhoon is particularly low compared with its surroundings. Therefore, where the typhoon center lands, it often causes a high wave and causes great damage.

the formation of typhoon eye

a tropical cyclone is a strong weather system that occurs in the tropical ocean. Like a vortex moving forward in a flowing river, it rotates rapidly around its center and moves forward with the surrounding atmosphere. Like temperate cyclones, the airflow in tropical cyclones in the northern hemisphere rotates counterclockwise around the center, but the opposite is true in the southern hemisphere.

the closer to the tropical cyclone center, the lower the air pressure and the greater the wind force. However, the center of tropical cyclones with strong development, such as typhoons, is a calm and clear sky area, that is, the typhoon eye.