The difference between hurricanes and typhoons

Typhoon refers to a tropical cyclone formed over the open sea above 26 ℃ in the tropics or subtropics. The word hurricane comes from the Caribbean devil Hurican, a destructive tropical cyclone in the Atlantic Ocean with winds exceeding 74 miles per hour, usually occurring in summer and early autumn, often with thunder and lightning. Let's take a look at the difference between a hurricane and a typhoon.

The difference between hurricanes and typhoons

There is no difference between hurricanes and typhoons, except that they are called in different places. Both hurricanes and typhoons refer to tropical cyclones with winds of more than 33 meters per second, which have different names only because of the different regions where they occur. The strong tropical cyclones generated in the northwest Pacific and the South China Sea are called "typhoons", those generated in the Atlantic Ocean, the Caribbean Sea and the eastern North Pacific are called "hurricanes", and those generated in the Indian Ocean, Arabian Sea and Bay of Bengal are called "cyclones".

How is the typhoon formed?

The typhoon originated in the tropical sea, where the temperature is high and a large amount of sea water is evaporated into the air, forming a center of low pressure. With the change of air pressure and the movement of the earth itself, the incoming air rotates to form a counterclockwise air whirlpool, which is a tropical cyclone. As long as the temperature does not drop, the tropical cyclone will become more and more powerful and eventually form a typhoon.

How did typhoons develop?

1. Gestation stage: after a day of exposure to the sun, strong cumulonimbus clouds are formed on the sea surface. the hot air in these cumulonimbus clouds rises, and the cooler air around them is constantly replenished, and the heat rises again, so that the air above is hot, the air below is cold, and the evaporation of water vapor in the hot air above expands the range of the cloud band, which is intensified by the expansion of the cloud belt. Under the influence of geostrophic deflection force, the expanding cloud rotates counterclockwise to form a tropical cyclone. The centrifugal force generated by the rotating air in the tropical cyclone throws the air out, the air in the center is getting thinner and thinner, and the air pressure is getting smaller and smaller, forming the initial stage of tropical depression-typhoon.

2. development stage: the central pressure of the tropical depression is lower than that of the outside world, so the surrounding air rushes to the tropical depression, which provides more energy of the tropical depression in case of heat, which exceeds the output energy. at this time, the air rotation in the tropical depression is more severe, the maximum wind in the center increases, and the central pressure decreases further. When the maximum wind near the center reaches a certain standard, it will be upgraded to a higher level, and the tropical depression will be raised to a tropical storm, and then to a severe tropical storm, typhoon, and sometimes to a strong typhoon or even a super typhoon.

3. Mature stage: the size of the typhoon depends on the ratio of energy input to output. If the input energy is greater than the output energy, the typhoon will strengthen, otherwise it will weaken. After a long road of development, the typhoon has become strong and has the ability to cause disasters. If it makes landfall at this time, it will cause great losses.

4. extinction stage: there are two paths for typhoon demise. The first one is: after typhoon landing on land, due to the combined influence of ground friction and insufficient energy supply, typhoon will weaken and die out rapidly. the residual cloud system after extinction can bring heavy rainfall for a long time. The second is: after the typhoon turns in the northern part of the East China Sea, lands in South Korea or passes through the Korean Strait, it changes into an extratropical cyclone in the Japanese Sea and dies slowly after it is transformed into an extratropical cyclone.