The set of solved problems is reproduced in QQ spatial geography paper 1000. The effect of greenhouse gas on the atmosphere and its countermeasures 5 [label: greenhouse gas, paper, greenhouse] is like this. The frivolous answer is: 1 popularity: 1 solving time: 2009-12-/kloc-. Water vapor (H2O), carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4) and ozone (O3) are the main greenhouse gases in the earth's atmosphere. As we all know, the greenhouse has the function of letting sunlight in and preventing heat from escaping, which is the so-called "greenhouse effect". In the earth's atmosphere, there are some trace gases, such as carbon dioxide, carbon monoxide, water vapor, methane, freon and so on. They also have a function similar to a greenhouse, that is, they let the short-wave radiation of the sun pass freely, and at the same time strongly absorb the long-wave radiation (infrared) emitted by the ground and the air, thus warming the surface layer. We call these trace gases greenhouse gases and their warming effect greenhouse effect.

It should be pointed out that the existence of a small amount of greenhouse gases in the atmosphere and the appropriate greenhouse effect are beneficial to human beings. If there were no greenhouse gases, the average temperature of the surface layer would be 33℃ lower than it is now, and the earth would become a cold planet. However, in recent decades, due to population growth, industrial development, urban growth, deforestation and other reasons, greenhouse gases such as carbon dioxide, methane and freon in the atmosphere have increased significantly, resulting in frequent weather and serious impact on social and economic development. Governments and people all over the world are very concerned about this, and many countries have promulgated "environmental protection laws". Only by strengthening the comprehensive management of the environment can we gradually reduce the content of greenhouse gases in the atmosphere and put the climate on the track of normal change.

Compared with carbon dioxide, other greenhouse gases have a higher greenhouse effect. The greenhouse effect of methane molecules is 2 1 times that of carbon dioxide molecules, 206 times that of nitrous oxide, and thousands to more than 10,000 times that of chlorofluorocarbons. But because the content of carbon dioxide is much higher than other gases, its greenhouse effect is still the biggest. Another feature of greenhouse gases is that they have a long life in the atmosphere, ranging from 50 to 200 years for carbon dioxide, 12 to 17 years for methane, 120 years for nitrous oxide and12 for CFCs. Once these gases enter the atmosphere, they can hardly be recovered, and only through natural processes can they gradually disappear. Because of their long life span, the impact of greenhouse gases is long-term and global. Even if mankind immediately stops emitting all man-made greenhouse gases, the greenhouse gases accumulated after the industrial revolution will continue to affect the earth's climate.

The increase of greenhouse gases strengthens the greenhouse effect, which is the main cause of global warming. It has become the knowledge of all countries in the world, and it is also a global pollution. Kyoto Protocol is an agreement initiated by the United Nations and reached by all countries in the world to take measures to reduce greenhouse gas emissions. At present, there are two international strategic countermeasures to deal with global warming:

-adaptation strategy, that is, preparing for future global warming, minimizing the possible adverse consequences of global warming and making full use of the possible beneficial effects;

-Limiting strategies, that is, controlling or stopping the growth of greenhouse gas concentration in the atmosphere to prevent additional global warming caused by it.