Recent weather disasters

Central Meteorological Observatory news165438+1October 18 released the first orange warning of blizzard this year:

Recently, the snowstorm weather is the strongest in the central and eastern regions. There will be heavy snowstorms in southeastern Heilongjiang, western and northern Jilin, western Liaoning, central and southeastern Inner Mongolia, northern Hebei and other places, and there will be heavy snowstorms in some areas. 165438+1October 17, the central and eastern regions of China have experienced the widest and strongest rain and snow weather since winter. According to the monitoring, this cold air will continue to expand.

So will this large-scale blizzard cause secondary disasters? What are the factors that cause secondary disasters? What is the warning signal of snowstorm disaster? Let's answer them one by one.

Some geologists explain that the melting of glaciers caused by climate warming can release the suppressed pressure in the earth's crust, which will lead to extreme geological accidents, including earthquakes and volcanic eruptions. The weight of one cubic meter of ice is equivalent to one ton. When these weights of ice melt, our home earth will change. So the first factor that causes secondary disasters is temperature. Rising temperature, global warming and melting glaciers lead to a series of changes; The second factor is the ozone layer, the atmosphere and so on. Due to the extensive use of fluorine-containing and chlorine-containing air conditioners, refrigerators and other high-power electrical appliances, the ozone layer is hollow and destroyed, which leads to the light and heat of the sun entering the earth, thus causing natural disasters such as strong winds, storms and floods on the earth.

The third factor is the destruction of natural ecology. Due to the large-scale construction of human beings and the serious desertification of land, the available land is getting less and less, and the natural ecology is degraded and deteriorated in a large area. The natural water retention capacity is greatly reduced, and the thermal insulation capacity is gradually weakened. The bad result is that it will be hotter in summer, colder in winter and there will be more sandstorms and other weather.

What is the warning signal of snowstorm disaster? Generally divided into four grades, blue, yellow, orange and red. The blue warning signal is 12 hours, when the snowfall reaches more than millimeters, yellow is more than 6mm, orange is more than10mm, and red is more than15mm.

After the snowstorm, people in some areas were trapped at home and could not go out, which was a secondary disaster. So I think blizzard will cause secondary disasters, but it is not the main factor.