Scientific information about typhoons, scientific knowledge of the origin of typhoons

The scientific knowledge about the origin of typhoons is as follows:

There are often many weak tropical eddies on the surface of the tropical oceans, and we call them the "embryos" of typhoons, because typhoons always develop from such weak tropical vortices. Meteorological satellites have identified that only about 10 per cent of the large number of tropical eddies that occur on the surface of the ocean can develop into typhoons.

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The origin of the word typhoon: "Research on Scientific and Technological Terms", Vol. 8, No. 2, 2006, published Wang Cunzhong's article "Exploration of the Source of Typhoon Terminology and Its Naming Principles".

Discussing the historical evolution of the term typhoon, the author believes that in ancient times, people called typhoons hurricanes, and it was not until the late Ming and early Qing dynasties that "Biaofeng" began to be used (in 1956, Biaofeng was simplified to the name typhoon, and the meaning of hurricane changed to a general term for cold wave gales or non-typhoon gales). There are two theories about the origin of "typhoon", the first is the "transliteration theory".

There are three types: one is evolved from the Cantonese word "gale wind"; the second is evolved from the Hokkien dialect "Fengtai"; The third is that during the occupation of Taiwan by the Dutch, it was named after the character Taifeng Typhoon in the Greek epic "History of Theocracy". The second type is "source theory", that is, the name given to the typhoon according to its ** place.

Since Taiwan is located in the Pacific Ocean and the South China Sea, most of the typhoons have to rush northward, and many typhoons pass through the Taiwan Strait and enter the mainland. "typhoon" is a transliteration of the word, and in English, typhoon is transliterated from Chinese Cantonese pronunciation toi fong to English, and then into Mandarin vocabulary.

Typhoon, called typhoon in English, tufan in Greek and Arabic, is very similar to Chinese, and both mean wind god in Arabic and English.

The word typhoon is derived from the Greek mythology of Typhon, the son of Gaia, the mother of the earth, who is a monster with a hundred dragon heads, and legend has it that the children of this monster are the terrible gale. Later, the word was introduced to China and merged with the Cantonese toi fung, which became the word typhoon.

What we call a typhoon is actually a severe tropical cyclone.

Typhoons and hurricanes are both a type of wind, but the place of occurrence is different, the name is different, in the western North Pacific, west of the international date, including the South China Sea and the East China Sea, it is called a typhoon, and in the Atlantic Ocean or the eastern North Pacific tropical cyclone is called a hurricane, that is to say, it is called a hurricane in the United States, in the Philippines, China, and the Japanese nuclear fiber Shenmoto area, it is called a typhoon, if it is in the southern hemisphere, it is called a cyclone.

1. Typhoon (English: typhoon) is a type of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs over the tropical or subtropical ocean, and is a powerful and deep "tropical weather system".

Tropical cyclones in the South China Sea and the Northwest Pacific are classified into six categories according to their maximum average wind strength (wind speed) near the center of the bottom layer, of which those with winds of 12 or more are collectively referred to as typhoons.

2. Broadly speaking, the term "typhoon" is not a tropical cyclone intensity. Tropical cyclones (including tropical storms, severe tropical storms and typhoons as defined by the World Meteorological Organization) with sustained winds of meters per second or more at the centre are classified as medium-coarse typhoons. Officially, the term "typhoon" even refers directly to the tropical cyclone itself.

When a tropical cyclone in the northwest Pacific reaches tropical storm intensity, the names are provided by the 14 chaotic countries and regions of the World Meteorological Organization's Typhoon Committee.

1. Typhoon (English: typhoon) is chaotic, which is a kind of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs over the tropical or subtropical oceans and is a powerful and deep "tropical weather system".

Tropical cyclones in the South China Sea and the Northwest Pacific are roughly classified into six categories according to the maximum average wind force (wind speed) near the center of the bottom, of which those with winds of 12 or above are collectively referred to as typhoons.

2. Broadly speaking, the term "typhoon" is not a tropical cyclone intensity. Tropical cyclones (including tropical storms, severe tropical storms and typhoons as defined by the World Meteorological Organization) with sustained winds of metres per second or more at their centre are referred to as typhoons. Officially, the term "typhoon" even refers directly to the tropical cyclone itself.

When a tropical cyclone in the northwest Pacific reaches tropical storm intensity, the names are provided by the 14 countries and territories of the Typhoon Committee of the World Meteorological Organization.

1. The origin of the typhoon.

What we usually call a typhoon is a tropical cyclone. A tropical cyclone is a rapidly rotating low-pressure vortex that occurs over a tropical or subtropical ocean, often accompanied by strong winds, heavy rains, and storm surges.

2. Hazards of typhoons.

Typhoons bring abundant rainwater to a wide area and become a rainfall system closely related to human life and production. However, typhoons also always bring all kinds of damage, and they are one of the most serious natural disasters in the world. The destructive power of typhoons is mainly caused by three factors: strong winds, heavy rain, and storm surge.

1. Strong winds. Typhoons are a huge reservoir of energy, with wind speeds of more than 17 ms and even more than 60 msec. It has been measured that when the wind force reaches force 12, the wind pressure per square meter perpendicular to the wind direction plane can reach 230 kilograms.

2. Heavy rain. Typhoons are very heavy rainfall systems. When a typhoon makes landfall, the rainfall centre can drop 100 300 millimetres in a day, and even 500 800 millimetres in a day.

Typhoons and rains are intensive, floods occur frequently, spread widely, are ferocious, and cause great damage.

Typhoons are formed in the vast tropical ocean where the upper layer of the ocean is warmer than the seawater, and a large amount of seawater 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 also rotates, and the auspicious cracked dust forms a counterclockwise rotating air vortex, which is a tropical cyclone. Continued high temperatures cause tropical cyclones to become more and more powerful, eventually forming typhoons.

Typhoons are a type of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs over the tropical or subtropical oceans and is a powerful and deep tropical weather system. China divides tropical cyclones in the South China Sea and the Northwest Pacific into six grades according to the maximum average wind strength near the center of the bottom layer, of which the wind force near the center is 12 or above, collectively referred to as typhoons.

Extended Materials. Typhoons are a category of tropical cyclones. In meteorology, according to the definition of the World Meteorological Organization, a tropical cyclone with sustained winds of 12 to 13 is called a typhoon or hurricane, the name of the hurricane is used in the North Atlantic and the eastern Pacific, and the synonym used in the western North Pacific is typhoon, and when the typhoon continues to strengthen, it is called a strong typhoon.

A typhoon is a severe tropical cyclone (with winds exceeding 32 6 m/s) that occurs in the northwest Pacific Ocean and the South China Sea. A severe tropical cyclone in the Atlantic Ocean or the eastern North Pacific Ocean is called a hurricane, which means that it is called a typhoon in China, the Philippines, and Japan, and a hurricane in the United States.

Tropical storms, severe tropical storms, typhoons, severe typhoons and super typhoons are sometimes referred to collectively as "typhoons" for ease of application and external service. Such as "Typhoon Number", "Typhoon Naming", "Typhoon Warning", "Typhoon Yearbook", "Typhoon Structure", "Typhoon Path", "Typhoon Formation", "Typhoon Disaster" and so on.

Typhoons are warm centres of depression with a nearly circular horizontal distribution with a radius of about several hundred kilometers and a vertical range that extends from the ground to the upper troposphere. Low ground pressure is an important feature of typhoons, and generally forms when the ground center pressure is low to 990 hPa or below. From the periphery to the center of the typhoon, there is a large pressure gradient and a strong cyclonic convergence flow field. At a distance of several tens of kilometers from the center, the wind reaches its maximum and is accompanied by heavy rain and high waves; However, in a small area near the center, the pressure gradient is very small, and the wind, rain, and waves disappear, and the typhoon eye scene unique to severe tropical cyclones appears.

Most of the winds occur in summer and autumn, and the vast majority of typhoons that affect our country also occur in these two seasons. In other seasons, a few typhoons may form over the tropical oceans, but their range is generally limited to lower latitudes.

Typhoons are one of the major catastrophic weather events in our country.