A summary of the characteristics of typhoons in 2008-09 for high scores
Typhoon experts decipher the characteristics of the 2009 typhoon
Source: New Meteorological website Release time: January 5, 2010
Recently, a reporter interviewed the China Meteorological Administration typhoon When meeting with the Marine Meteorological Forecast Center, director Qian Chuanhai told reporters that in 2009, 22 numbered tropical cyclones were generated in the northwest Pacific and South China Sea, 5.4 fewer than the same period in history, and 9 landed in my country, which was fewer than the same period in history. There are 2.2 more typhoons, which have the characteristics of concentrated landfall time and southerly location. Nearly half of the landfalling typhoons have complicated paths. Among them, September has the largest number of typhoons, while August, which has the most typhoons on average over many years, has fewer typhoons.
Zhang Ling, a senior engineer at the forecast center, explained: Among the landfalling typhoons in 2009, four typhoons, including "Swan", "Morakot", "Bama" and "Lupi", showed complex paths and life histories. It has the characteristics of being longer, with "Bama" lasting up to half a month. The reason for the complex paths of these typhoons is mainly related to the interaction between multiple vortices. In 2009, the subtropical high in the western Pacific was larger in area and stronger in intensity, which was the main reason for the lower number of typhoons in the western Pacific and South China Sea this year. In addition, the South China Sea summer monsoon was significantly more active from the end of May to early August, resulting in a relatively concentrated number of 6 typhoons that made landfall in my country during this period. During the South China Sea summer monsoon, strong high- and low-altitude vertical wind shear in the waters near the South China Sea is the key reason why most typhoons affecting my country this year have asymmetric structures.
Are the characteristics of typhoon generation in 2009 related to the El Niño event? Zhang Ling explained that the El Niño state last year had certain special characteristics, but judging from the historical statistics of the number of typhoons generated in the western Pacific in El Niño years, in most cases, when the equatorial central and eastern Pacific region enters the El Niño state, there are fewer typhoons in the western Pacific. The numbers are too few. The relationship between the El Niño event in the central and eastern equatorial Pacific last year and the number of typhoons generated in the western Pacific is basically consistent with the aforementioned statistical relationship, but the specific impact mechanism remains to be further studied.
In addition, the thousands of kilometers long quasi-east-west tropical intertropical convergence zone has appeared many times in the Western Pacific and the South China Sea, providing a good atmosphere for multiple tropical cyclones to interact in the same convergence zone. Background, and the interaction between multiple vortices makes typhoons exhibit complex and changeable characteristics in terms of path, speed, and intensity, which caused certain difficulties in the 2009 typhoon operational forecast.
(Author: Wu Yueyang Chuaihuan Editor: Lian Tao)
2008 is a once-in-a-lifetime opportunity for the young and old fans of Typhoon Bar, not to mention teenagers, just four or five. It is rare for people who are ten years old or even seventy or eighty years old. If you want to see the Wind King, go to the south of the mainland to guard it, but the east side is not bad either. Compared with them, Saint Pa in 2007 is just a younger brother.08 There are more annual storms visiting the mainland than in 2007. As wind fans can see, the typhoon will still maintain a very high intensity when it makes landfall, just like Sammy in 2006. What is different from usual is that many typhoons will not reach the mainland before they approach the mainland. Generally, they begin to weaken, but the 2008 typhoon will intensify before approaching the land, so they will attack the land with great strength, and they are "a group of life-stealing and wealth-grabbing maniacs". Whether it is the mainland, Goryeo, Indo-China Peninsula or Samurai The country is their stage. This is the Western Pacific, and the Atlantic Ocean is separated by the old American continent. Whether it is the island in the ocean, the Caribbean, or the Gulf of Mexico, it is the homeland that hurricanes will never abandon. In 2008, they will look like kings. Return home. On the other side of the Atlantic, on the western coast of Europe, God may send them a pretty hurricane princess or a handsome hurricane prince. Otherwise, Europeans will almost forget what a hurricane looks like. A reliable landfall point will probably be between southern France and the northern part of the Iberian Peninsula. Europeans may realize that whether it is Hurricane Princess or Hurricane Prince, they are also unbearable at first. The west and central and southern Europe are both places where they vent their anger. The last time they visited Europe and it was called a hurricane was in October 2005. Hurricane Vince was thousands of miles away and not far away. After thousands of miles and wading through mountains and rivers, he arrived at the Iberian Peninsula, putting out a "fire" there and sending the longed-for rain to the people there. If "Vince" is an "angel", then in 2008 The hurricane is a big "devil" to Europeans. Even if it roars, the European continent will tremble.
Characteristics of the 2008 typhoon (hurricane):
< p>1. The eyes of typhoons in 2008 are generally very small, the smallest in recent years, and very compact, but they generally do not last very long, and they will not have such empty eyes as in 2004, and they still remain Such a long time.Secondly, the number of "parallel imports" of typhoons in 2008 is the same as that in 2007. There will not be 11 super supers like in 1997, but the number reaching typhoon level will be higher. More than in 2007. Most typhoons generally do not stay strong for a long time.
Thirdly, although there were more parallel typhoons in 2008, a few were extremely strong, and a few were even Unparalleled in history, its sinister hiddenness lies in its (1) large disk top, covering a wide range, (2) not only does it carry abundant water vapor, it will cause heavy rain, and its destructive ability of disturbing energy is even more terrifying. (3) It shows a high-power posture when it is close to the land, and looks very majestic, just like a lion opening its bloody mouth to eat "land" into its belly. Coastal areas are the hardest hit. The wise choice is to run away faster or further away. If you are slow, you will be bitten by it, which would be too tragic.
Four, the 2008 typhoon ( Hurricanes), whether they are in the Pacific or the Atlantic, their basic characteristics are very similar. Whether in Asia, Europe, the Americas, especially Central America and North America, we need to be extra vigilant.
Posted by Xie She Zhen (note amateur)