The structure of a typhoon is generally the same, so what areas are its structure divided into according to the wind speed?

Typhoon is a form of cyclone. The structure is divided into two aspects: horizontal and vertical. 1. In the horizontal direction, it can be generally divided into three parts: typhoon periphery, typhoon main body and typhoon center. 2. In the vertical direction: from the ground to 3 kilometers (mainly from the friction layer of 500- 1000 meters), the low-level airflow flows into the layer, and the airflow has obvious meridional components converging toward the center. From about 8 km to the tropopause (about 12- 16 km), it is an upper outflow layer.

Typhoon is a powerful destructive cyclone vortex and a mature typhoon. Its bottom layer is divided into three areas according to the velocity of converging airflow: outer circle, also known as windy area. From the edge of typhoon to the outer edge of vortex area, the radius is about 200 ~ 300 km, and its main feature is that the wind speed to the center increases sharply, and the wind power can reach more than 6 levels; The middle circle, also known as the vortex zone. From the edge of the windy area to the eye wall of the typhoon, the radius is about 100km, which is the area with the strongest convection, wind and rain and the most destructive force in the typhoon. Inner ring, also known as typhoon eye area. The radius is about 5 ~ 30km. Most of them are round, and the wind speed decreases rapidly or the wind is calm.

Global typhoons mainly occur in eight sea areas: five sea areas in the northern hemisphere are the western and eastern North Pacific, the western North Atlantic, the Bay of Bengal and the Arabian Sea, and three sea areas in the southern hemisphere are the western South Pacific, the western and eastern South Indian Ocean. Among them, the northwest Pacific is the most (accounting for more than 36%), while typhoons have not been found in the South Atlantic and Southeast Pacific. Typhoon sources in the northwest Pacific are divided into three relatively concentrated areas: the ocean east of the Philippines, the ocean near Guam and the central South China Sea. The typhoon formed in the South China Sea has a great influence on the south of China.

Judging from the typhoon structure, such a huge behemoth must have unique conditions: a vast high-temperature ocean. The seawater temperature should be higher than 26.5℃ and the depth should be 60m. Typhoon is a very violent weather system, with an average daily consumption of 3100 ~ 4,000 calories/cm? Energy, this huge energy can only be supplied by the latent heat released by the vast tropical ocean.