the number of typhoon is also the number of tropical cyclone. People want to number tropical cyclones, on the one hand, because a tropical cyclone often lasts for more than a week, and several tropical cyclones may appear in the ocean at the same time. With the serial number, there will be no confusion; On the other hand, the naming, definition, classification methods and determination of the center position of tropical cyclones are different in different countries and methods, even in the same country, they are not exactly the same among different meteorological stations, which often leads to various misunderstandings and confusion in use.
since 1959, China has started to number the tropical cyclones (tropical storms and above) that occur or enter the Pacific Ocean and the South China Sea north of the equator and west of the 18-degree meridian every year, and the maximum wind force near the center is greater than or equal to 8. Tropical cyclone offshore. When the cloud system structure and circulation are clear, as long as the report that the maximum average wind force near the center is 7 or above is obtained, it is also numbered. The serial number consists of four digits. The first two digits indicate the year. The last two digits are the serial numbers of tropical cyclones above storm level in that year. For example, last year's No.13 typhoon "Du Fu" was numbered O313．, which means the 13th tropical cyclone above storm level in 23. Tropical depression and tropical disturbance are not numbered.
People began to name typhoons in the early 2th century. It is said that an Australian forecaster named tropical cyclones as political figures he didn't like in the early 2th century, so that meteorologists could call them publicly. In the Pacific Northwest, the official naming of typhoons began in 1945. At first, only women's names were used. Later, it was said that due to opposition from feminists, from 1979, a man's name and a woman's name were used alternately. Until November 25th to December 1st, 1997, the 3th meeting of the Typhoon Committee of the World Meteorological Organization (WMO) held in Hong Kong decided that tropical cyclones in the northwest Pacific and the South China Sea should be named with Asian style, and decided to use a new naming method from January 1st, 2. The new naming method is to make a naming table in advance, and then reuse it year after year in sequence. The naming table * * * has 14 names, which are provided by 14 member countries and regions in the Asia-Pacific region of WMO, including Cambodia, China, North Korea, Hong Kong, Japan, Laos, Macau, Malaysia, Micronesia, Philippines, South Korea, Thailand, the United States and Vietnam. Each country or region provides 1 names. These 14 names are divided into 1 groups, with 14 names in each group. They are arranged in alphabetical order according to the English names of each member country. They are recycled in order. At the same time, the original tropical cyclone numbers are kept.
Browse the typhoon naming table. People's names are rarely used. Most of them are names of animals, plants, food, etc. Some names are adjectives or beautiful legends, such as Yutu and Wukong. The name "Rhododendron" was provided by China, which is the familiar Rhododendron: "Korowang" which landed in China a while ago was provided by Cambodia, and it is the name of a tree: "Morak" was provided by Thailand, which means emerald; "Ibudu" is the name provided by the Philippines, which means a chimney or a water pipe that drains rainwater from the roof to a ditch.
Under normal circumstances, the pre-established naming list will be reused year after year in sequence. However, under special circumstances, some adjustments will be made to the naming list. For example, when a typhoon is notorious for causing particularly serious disasters or casualties and becomes a well-known typhoon, in order to prevent it from having the same name as other typhoons, the name will be deleted from the current naming list and replaced with a new name. The latest revision of the typhoon nomenclature table was made at the 33rd session of the Typhoon Committee in 2, and the table came into effect on January 1, 22.