Global warming is a phenomenon related to nature, which is due to the continuous accumulation of greenhouse effect, resulting in the imbalance of energy absorbed and discharged by the geo-atmospheric system, and the continuous accumulation of energy in the geo-atmospheric system, leading to rising temperature and global warming.

Because people burn fossil fuels, such as oil and coal. Or cutting down and burning down forests will produce a lot of carbon dioxide, that is, greenhouse gases, which have a strong permeability to visible light emitted by the sun, a strong absorption to long-wave radiation emitted by the earth, and a strong absorption of infrared radiation from the ground, leading to an increase in the temperature of the earth, that is, the greenhouse effect.

Global warming will redistribute global precipitation, melt glaciers and frozen soil and raise sea level, which will not only endanger the balance of natural ecosystems, but also affect human health and even threaten human survival.

On the other hand, due to the greenhouse gas emissions from the land, the temperature in the mainland rises and the temperature difference with the ocean decreases, which in turn leads to the slow air flow and the smog can not be dispersed in a short time, which leads to the increase of smog weather in many cities and affects human health. Measures such as car restrictions and production suspension have only short-term and local effects, and cannot fundamentally change climate warming and smog pollution.

Cause analysis:

1, the factor of population explosion.

The rapid growth of population is one of the main factors leading to global warming. At the same time, it also seriously threatens the balance between the natural ecological environment. With such a huge population, the amount of carbon dioxide emitted by itself every year will be an amazing number, and the result will directly lead to the continuous increase of carbon dioxide content in the atmosphere, thus directly affecting the climate change on the earth's surface.

2, atmospheric environmental pollution factors.

The increasingly serious environmental pollution has become a major global problem, and it is also one of the main factors leading to global warming. The research on global climate change in 2 1 century has clearly pointed out that the temperature of the earth's surface has been rising since the end of last century.