What is the path of the typhoon?

The direction and speed of typhoon movement depends on the power of typhoon? Power is divided into internal force and external force. The internal force is the resultant force from north to west caused by the different geostrophic skewness caused by the latitude difference between north and south within the typhoon range. The larger the typhoon range, the stronger the wind speed and the greater the internal force? The external force is the force of the flow field around the typhoon on the typhoon vortex, that is, the guiding force of the easterly belt of the basic airflow south of the subtropical high in the northern hemisphere.

Internal force mainly plays a role in the initial generation of typhoon, while external force is the leading force to manipulate the movement of typhoon, so the typhoon basically moves from east to west?

Because of the shape of subtropical high? Location? Due to the change of intensity and other factors, the moving paths of typhoons are not uniform, but become diverse? Taking the typhoon moving path in the northwest Pacific as an example, there are three moving paths:

The first is the typhoon heading west: it moves from the east of the Philippines to the west, crosses the South China Sea, and finally lands on Hainan Island or northern Vietnam. This route mostly occurs in 10~ 1 1. Typhoon Billis in 2006 is a typical example?

2. Landing typhoon: moving from the sea to the northwest, crossing the Taiwan Province Strait, in Guangdong, China? Landing along the coast of Fujian and Zhejiang and gradually weakening into low pressure? This typhoon has the greatest impact on China? The two typhoons "90 15" and "97 1 1" that have had the greatest impact on Jiangsu in recent years all belong to this type, and the paths from July to August are basically the same.

3. Parabolic typhoon: it moves to the northwest first, and when approaching the eastern coast of China, it turns to the northeast without landing, and turns around Japan, with a parabolic path, which mostly occurs in May-June and September-165438+1October. After a typhoon is formed, it usually moves out of the source and develops? Evolution of weakening and extinction?

A mature typhoon has a circular vortex radius of 500 km ~ 1000 km and a height of 15 km ~20 km. Maximum wind speed area and typhoon eye? The wind speed in the peripheral area increases from outside to inside, with spiral clouds and precipitation; The strongest precipitation occurs in the maximum wind speed area, with an average width of 8 km ~ 19 km, and there is a circular cloud wall between it and the typhoon eye; The typhoon eye is located in the center of the typhoon. The most common typhoon eye is round or oval, ranging in diameter from 10 km to 70 km, with an average of about 45 km. The weather in the typhoon eye is windless. Partly cloudy and warm liver?