The meaning of typhoon

Typhoon is a strong tropical cyclone and a natural disaster phenomenon of atmospheric circulation system.

Typhoons are formed in the western Pacific Ocean, the South China Sea and the Indian Ocean, and are characterized by strong winds, heavy rains and strong convective weather. The formation of typhoon is mainly influenced by ocean warmth, ocean surface temperature, humidity and air pressure. When the sea surface temperature is higher than 26 degrees Celsius and the vertical wind shear is small, the conditions for the formation of tropical cyclones are more favorable.

Typhoon is characterized by a rotating cloud system, with a strong and low pressure area in the center and spiral clouds around it, and its center is called typhoon eye. Typhoon, accompanied by strong winds and a lot of precipitation, often produces extreme weather phenomena such as strong winds, heavy rains, floods and storm surges, which have a serious impact on coastal areas and maritime navigation.

Typhoons are usually divided into several grades, such as tropical depression, tropical storm, strong tropical storm, typhoon and strong typhoon. According to its intensity and impact on the surrounding areas, the local government and meteorological departments will issue different levels of early warning and alarm to remind people to take defensive measures to avoid unnecessary disasters.

Typhoon is a serious natural disaster in coastal areas and island countries because of its destructive power and wide range. In order to reduce the impact of typhoons, countries have adopted a series of forecasting, monitoring, rescue and disaster reduction measures to protect people's lives and reduce property losses.

Historical sources of words:

The history of typhoon comes from ancient China, and it is one of the earliest characters in China to name and describe tropical cyclone phenomenon. The word typhoon first appeared in Erya. According to historical records, it only appeared in the Western Han Dynasty. At that time, in Eryali, Taiwan Province was interpreted as a lake, while the wind meant a strong storm.

In ancient times, it was observed that Taiwan Province Province was often attacked by strong storms, so this meteorological phenomenon was called typhoon. Since then, the word typhoon has gradually been widely adopted and introduced by Chinese cultural circles in other countries and regions. In East Asia, typhoons are called typhoons or similar words, such as typhoons in Japan and typhoons in South Korea.

With the development of ancient science, disaster observation and astronomy in China, the names and observation methods of typhoons have gradually improved. During the Ming and Qing Dynasties, China formally established special astronomical instruments and monitoring departments, and began to systematically observe and record the formation and activities of typhoons.

In modern times, typhoon is still an important meteorological vocabulary in China and around the world. With the development of meteorological observation and forecast technology, people can more accurately predict and track the path and intensity of typhoons, which provides an important basis for disaster prevention and relief.