What are the main meteorological disasters?

Tropical cyclone is the general name of strong vortex with high center temperature and low pressure formed in tropical marine atmosphere. It is a very destructive weather phenomenon, which will lead to severe weather such as strong winds, heavy rains, huge waves and storm surges. The average annual loss is more than10 billion yuan. For example, Yunna, who landed in Zhejiang in 2004, created10 billion at a time.

2. Strong winds and hail

Wind and hail disaster refers to the disaster caused by the condensation of ice in cumulonimbus clouds falling from the air under the control of convective weather. Hail often destroys large areas of crops and orchards, damages buildings and threatens human safety. It is a serious natural disaster, which usually occurs in summer and autumn.

3, low temperature freezing

The low-temperature freezing injury is mainly caused by the invasion of cold air and cold wave, which causes continuous cooling for many days, causing crops to suffer and reduce production. In the years of severe freezing injury, such as 1968, 1975, 1982, the area of seedlings killed by freezing injury reached more than 20%.

4. Blizzard

A natural phenomenon that a large amount of snowfall for a long time causes a large area of snow disaster. Hazards include: seriously affecting or even destroying lifeline projects such as transportation, communication and transmission lines, which have a great impact on people's production and life.

5. Drought

In a long enough period, the rainfall is seriously insufficient, which leads to soil water loss due to evaporation and river flow reduction, which destroys normal crop growth and human activities. This is a disastrous weather phenomenon. As a result, the output of crops and fruit trees is reduced, drinking water for people and livestock is difficult, and industrial water is scarce.

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