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Solved the problem Collection **To QQ space Why doesn't it rain in the eye of the typhoon? [Tags: Typhoon Rain, Typhoon, Rain] As the title s stupid 1 Popularity:
2 Resolved:2008-05-08 08:38 Report A typhoon is a large mass of rotating air with a very low central pressure, and the surrounding air rotates rapidly in a counterclockwise direction around its center.
The lower level air rotates towards the center of low pressure, and the faster the air flow, the greater the wind speed.
Within a circular area with an average diameter of about 40 km at the center of a typhoon, it is commonly referred to as the eye of the typhoon. Because the air on the periphery of the eye of the typhoon rotates too much, it is not easy for the outside air to enter the central area of the typhoon under the action of centrifugal force, so the eye area of the typhoon is like an isolated tube surrounded by a wall of clouds. The air inside it is almost non-rotating, and the wind is weak.
The air outside the eye area of the typhoon swirls towards the center of low pressure, carrying a large amount of water vapor, which is not easy to enter the eye area, and rises on its periphery, forming a large gray-black bloated and towering cloud, which is pouring rain. However, there is a downdraft in the eye area of the typhoon, so the clouds and rain dissipate, and twinkling stars can be seen at night. As shown in the satellite image of Typhoon Rammasun No. 5 this year, the eye of the typhoon is generally sunny to slightly cloudy, so it appears as a small black dot on the satellite image.
But after the eye of the typhoon is removed, the weather will become extremely bad again.
In the eye of a typhoon, many flocks of birds are often seen. These countless seabirds, blown into the eye area by the typhoon's currents, find a "safe haven" and sometimes fly far away as the typhoon moves.
Although the weather was good in the eye of the typhoon, the waves at sea were very rough. This is because the pressure at the center of the typhoon is very low compared to the surrounding area. Therefore, in the place where the typhoon center makes landfall, it often causes high waves and causes a lot of damage. (
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High pressure at the eye of the typhoon The weather under the control of high pressure is clear.
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Of course, it's a low-pressure weather system.
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Typhoons are actually strong tropical cyclones. A tropical cyclone is a severe weather system that occurs in the tropical oceans and moves forward with the surrounding atmosphere like a vortex in a flowing river. Like extratropical cyclones, the flow in a tropical cyclone in the Northern Hemisphere rotates counterclockwise around the centre and vice versa in the Southern Hemisphere.
The closer you are to the center of the cyclone, the lower the pressure and the stronger the wind. However, the development of a strong tropical cyclone, such as a typhoon, has a calm area of clear skies, known as the eye of the typhoon, at its centre.
Tropical cyclones that occur over tropical oceans vary greatly in intensity. Before 1989, China called a tropical cyclone with a maximum wind force of 8 or above near the center a typhoon, and a tropical cyclone with a maximum wind force of 12 near the center as a strong typhoon. Since 1989, China has also adopted the international classification standard, namely:
When the maximum wind force near the center of the tropical cyclone is less than 8, it is called a tropical depression, the wind force of 8 and 9 is called a tropical storm, the wind force of 10 and 11 is a strong tropical storm, and only a tropical cyclone with a maximum wind force of 12 near the center is called a typhoon.
From the above definition, it is not difficult to see that a tropical cyclone is a general term for tropical depressions, tropical storms, severe tropical storms and typhoons. However, due to the fact that the tropical depression is not very destructive, the tropical cyclone referred to as the conventional one generally does not include the tropical depression.
Tropical cyclones require enormous energy to form and develop, so they form in tropical oceans with high temperatures, high humidity and other suitable meteorological conditions. According to statistics, tropical cyclones are formed in tropical oceans around the world except for the South Atlantic.
Most tropical depressions do not develop into tropical storms, and only a certain number of tropical storms can develop into typhoon strength, and the intensity of typhoons varies greatly, with some strong winds with a maximum wind speed of 35 m s near the center, but it is not uncommon for typhoons with a maximum wind speed of more than 50 m s near the center. For example, Typhoon No. 9417, which made landfall in Ruian, Zhejiang, had a maximum wind speed of 45 meters per second near its center when it made landfall.
The life cycle of a tropical cyclone can be divided into three stages: generation, maturity and extinction. Their lifespan can generally be more than one week, and some tropical cyclones can have a lifespan of more than two weeks when the external environment is favorable. When a tropical cyclone makes landfall or moves north to higher latitudes, it will quickly die out because it loses the high temperature and humidity conditions on which it depends.
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Typhoon sedan is a low-pressure cyclonic weather system. Typhoons are a type of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs over the tropical or subtropical ocean, and is a powerful and deep "tropical weather system". It is a classification of tropical cyclones in countries or regions north of the equator and west of the date line.
China divides tropical cyclones in the South China Sea and the Northwest Pacific into six grades according to the maximum average wind force (wind speed) near the center of the bottom layer, of which wind force of 12 or more is collectively referred to as "typhoon". Typhoons can be divided into general typhoons (maximum wind speed of 12-13), strong typhoons (maximum wind speed of 14-15), and super typhoons (maximum wind speed of 16). A typhoon is a deep system of depression with a very low central pressure, with significant convergence towards the center in the lower layers and major outward divergence in the top.
The structure of typhoons is divided into the typhoon eye area, the cloud wall area, and the spiral rain belt area.
When the sea is heated, a large amount of sea water evaporates and rises, the sea surface pressure decreases, new air comes in, and it rises, and this cycle will form a counterclockwise vortex in the Northern Hemisphere under the action of geostrophic deflection forces, and as long as there is energy to replenish it, the cyclone will become more and more powerful until the central wind speed exceeds the meter second, and it is called a typhoon, and the storm brought by a typhoon.
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Typhoon is a very common natural disaster in the coastal areas of our country, although the typhoon is not so destructive, but when the typhoon comes, it can also cause great economic losses and personnel, especially the super typhoon above 16, everywhere is basically "looted", but fortunately, the movement of the typhoon is very large, people can use the current scientific and technological equipment to find them early, and take preventive measures in advance, so as to avoid economic losses and personnel to the greatest extent. Friends who have seen the typhoon forecast know that the typhoon is like a huge spiral on the map, and there will be a typhoon eye in the center of the typhoon, just like the center of the tornado, and there is generally no wind in the center of the typhoon eye, and there will be no dark clouds, which is relatively safe, which can't help but make us wonder, why is the typhoon so destructive, but the typhoon eye is very safe? After reading the knowledge. >>>More
Typhoons are a type of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs over the tropical or subtropical oceans and is a powerful and deep "tropical weather system". >>>More