17 what is the concept of typhoon?

Super typhoon is also called super typhoon or super typhoon, which is referred to as SuperTY by China Meteorological Bureau, Super T by Hong Kong Observatory and STY by Joint Typhoon Warning Center. Super typhoon refers to the maximum average wind speed near the bottom center ≥ 5 1.0m/s, that is, 16 or above, which is the most violent classification of tropical cyclones in the northwest Pacific.

That is, as low as near the center, the maximum sustained wind speed is 160 km/h, and as high as or over 240 km/h. This kind of wind power is rare on land and extremely destructive. The waves on the sea are extremely huge waves over 14 meters, with foam all over the sky and extremely low visibility. Therefore, the wind force of super typhoon is obviously worse and has disastrous destructive power.

According to international practice, the maximum wind force near its center is divided into:

Tropical depression, the maximum wind speed is 6 ~ 7, (10.8 ~ 17. 1 m/s);

Tropical storm with maximum wind speed of 8-9 (17.2-24.4m/s);

Strong tropical storm, maximum wind speed 10 ~ 1 1, (24.5 ~ 32.6m/s);

Typhoon, maximum wind speed 12 ~ 13, (32.7 ~ 41.4m/s);

Strong typhoon with maximum wind speed14 ~15 (41.5 ~ 50.9 m/s);

Super typhoon with maximum wind speed ≥ 16 (≥5 1.0m/s).

Extended data:

the typhoon structure

Typhoon is a deep low-pressure system, and its central air pressure is very low. There is an air flow converging towards the center at the lower level, and the air flow at the upper level mainly diverges outward. If the typhoon is cut horizontally, we can see that there are three obviously different areas, from the center to the outside: typhoon eye area, cloud wall area and spiral rain belt area.

Typhoon Eye Area: It's strange that the wind here is very light and the weather is sunny, with an average diameter of 40 kilometers. The sailors who participated in it humorously called Typhoon Eye "Xanadu".

Cloud wall area: the cloud wall area with a width of tens of kilometers and a height of more than ten kilometers around the typhoon eye, also called eye wall. The cloud wall is towering here, the wind is howling, the rain is pouring, the sea is churning, and the weather is the worst.

Spiral rain belt area: Outside the cloud wall, there are spiral rain belts, and several rain (cloud) belts gather spirally around the eye wall. The rain is tens to hundreds of kilometers wide and several Qian Qian meters long. There will be showers and windy weather where the rain belt passes.

Baidu Encyclopedia-Typhoon

Baidu Encyclopedia-Super Typhoon