Do you know why it is so hot today?

It is precisely because of global warming and urbanization caused by the greenhouse effect that the weather is extremely hot this year.

As we all know, the global temperature rise was very obvious after the beginning of the industrial revolution. The main reason is the rapid development of industrial revolution and the rapid progress of science and technology, which leads to a large increase in the use of chemical fuels. Some scientific and technological products, such as automobiles and airplanes, emit a lot of greenhouse gases with strong heat absorption into the atmosphere, such as carbon dioxide, methane and nitrous oxide.

The concentration of these greenhouse gases in the atmosphere is getting higher and higher, which makes the atmosphere form a greenhouse gas film, thus forming the greenhouse effect. The heat of the sun radiates to the ground and then reflects to the sky. Because of the greenhouse effect, this heat cannot be dissipated, which makes the earth's temperature higher and higher, leading to global warming.

Another reason for global temperature rise is urbanization. Some scientists believe that urbanization is also an important factor of global temperature rise, that is, the heat island effect. Its impact may be more worthy of attention than the greenhouse effect. 1833, Lake Howard, a British climatologist, compared the temperatures in the urban area and the suburbs of London, and found that the temperature in the urban area was higher than that in the suburbs, and put forward the climate characteristics of the heat island effect for the first time.