Weather Liulin

According to news reports, this heavy rainfall in Liulin Town, Hubei Province is really worrying. According to official information, this heavy rainfall has affected more than 8,000 people in this town, 2 1 person died and 4 people lost contact. How strong is the precipitation this time? From June 2 1 day 5438+0 1 to 9: 00 on June 5438+02, the rainfall in Liulin town was 503 mm, and from 4: 00 to 7: 00 on June 5438+02, the rainfall reached an astonishing 373.7 mm, both extreme values since the local meteorological records.

Liulin Town is surrounded by mountains on three sides, and there is serious water accumulation in heavy rain, with an average water depth of 3.5 meters and the deepest water accumulation of 5 meters. The sudden heavy rainfall caught people off guard, although local cadres shouted with horns, knocked on the door to remind the masses to move, and later even used police cars to whistle in the street to warn them. Most of the people were safely transferred and properly placed, but they still caused great losses.

Extreme weather and heavy rain. In the past July, the once-in-a-century flood in Henan Province was worrying, and heavy rainfall occurred in Sichuan and Hubei. The amount of rainfall and the short time are shocking. People can't help asking why there are so many extreme weather and floods so frequently this year.

This year is indeed a disaster-ridden year. Drought and floods have made many people's lives worse, and even the Taklimakan desert has been flooded. Taklimakan Desert is one of the top ten deserts in the world, with little rainfall at ordinary times. This three-hour rainfall dropped by 50mm, and it rained for half a year as usual. The desert land is loose, and some disasters have been caused after heavy rainfall.

Hawking, a famous physicist, once said that if human beings do not protect the environment, the living environment of the earth will continue to deteriorate in the future and may eventually become a "fireball". Will this become a reality? It is not easy to find a balance between science and technology and the environment. Now mankind is in the stage of rapid development of science and technology. The destruction of the environment leads to the aggravation of the greenhouse effect, which has a great impact on the global environment and climate. If left unchecked, the earth may become uninhabitable like Venus.

Of course, this year's heavy rainfall has its own unique reasons. For example, the flood in Henan was caused by two typhoons that produced a lot of water vapor. There is a mountain behind Henan, which prevents water vapor from going deep, and a lot of water vapor can't get out of Henan. In the end, only heavy rainfall was formed in the local area, which eventually led to floods in Henan.

Behind these rounds of heavy precipitation in the south of the Yangtze River, we will hear a term-subtropical high. In the long run, the rainfall in May is generally concentrated in South China, but at 202 1, there is one difference, that is, the subtropical high is very strong, so the rainfall time is concentrated and the rainfall is heavy, causing disasters.