Is the typhoon center low or high relative to its surroundings? Is the temperature higher or lower?

The typhoon center is in a low pressure state relative to its surroundings. The temperature is higher. There is a phenomenon that the air sinks and warms up, which is higher than other normal places, thus causing the clouds to disperse and become the eye of the typhoon.

Because the air pressure in the tropical depression center is lower than that outside, the surrounding air rushes into the tropical depression and rises when it encounters heat, which provides more energy to the tropical depression, exceeding the output energy. At this time, the air in the tropical depression rotates more violently, the maximum wind force in the center increases, and the central air pressure further decreases.

When the maximum wind force near the center reaches a certain standard, it will be upgraded by one level.

Tropical depression rises to tropical storm, then to strong tropical storm, typhoon, and sometimes to strong typhoon or even super typhoon, depending on the ratio of energy input and output. If the input energy is greater than the output energy, the typhoon will strengthen, otherwise it will weaken.

Extended data

Typhoon has the following benefits for human beings:

First of all, typhoons bring people abundant fresh water. Typhoon brought a lot of rainfall to the coast of China, the coast of the Sea of Japan, India, Southeast Asia and the southeastern United States.

Secondly, the tropical and subtropical areas near the equator have the longest sunshine time, and the dry heat is unbearable. If there is no typhoon to dissipate heat in these areas, it will be hotter there and the surface sand shortage will be more serious.

At the same time, the cold zone will be colder and the temperate zone will disappear. China will not have a spring city like Kunming, nor will it have an evergreen Guangzhou, and "Beidacang" and Inner Mongolia grassland will also cease to exist.

Third, the typhoon can reach a top speed of more than 200 kilometers per hour, and it is invincible wherever it goes. This huge energy can directly cause disasters to mankind, but it also keeps the earth in thermal balance and makes mankind live and work in peace and contentment.

Fourth, typhoons can also increase fishing output. Every time a typhoon blows, it turns over the river, rolling up the nutrients in the river bottom and the sea, increasing the bait, attracting fish to gather near the water surface, and naturally increasing the catch.

Baidu Encyclopedia-Typhoon