What are the causes of the greenhouse effect?

Greenhouses have two characteristics: the temperature is higher than that of the outdoors and no heat dissipation. The glass flower house and vegetable greenhouse that we can see in life are typical greenhouses.

The use of glass or transparent plastic film to make a greenhouse is to let sunlight directly irradiate into the greenhouse to heat the indoor air, and the glass or transparent plastic film can prevent the indoor hot air from being emitted to the outside, so that the indoor temperature is kept higher than the outside state, so as to provide conditions conducive to the rapid growth of plants.

How did the greenhouse effect come about.

The greenhouse effect is mainly caused by the excessive burning of coal, oil and natural gas in modern industrial societies, which release large amounts of carbon dioxide gas into the atmosphere after combustion.

Carbon dioxide gas has the function of heat absorption and heat insulation. As a result of its increase in the atmosphere, it forms an invisible glass cover that prevents the heat radiated by the sun to the Earth from being dissipated into outer space, and as a result, the Earth's surface heats up. As a result, carbon dioxide is also known as a greenhouse gas.

Other greenhouse gases are emitted by human activities and nature, such as chlorofluorocarbons, methane, low-altitude ozone and nitrogen oxide gases.

What are the dangers of the greenhouse effect.

The greenhouse effect, caused by environmental pollution, refers to the phenomenon of the earth's surface becoming hotter.

It can have several serious consequences:

1 Increasing pests and diseases on the planet; 2 Sea level rise; 3 Abnormal weather and an increase in ocean storms; 4 The land is arid and the area of desertification is increasing. Scientists**: If the increase in the Earth's surface temperature continues at the current rate, by 2050, the global temperature will rise by 2-4 degrees Celsius, the icebergs of the Arctic and Antarctic will melt significantly, causing sea levels to rise significantly, and some island countries and coastal cities will be likely to be submerged, including several famous international cities such as New York, Tokyo and Sydney.

How to reduce the greenhouse effect.

In order to reduce excessive carbon dioxide in the atmosphere, on the one hand, people need to save electricity as much as possible (because power generation burns coal) and drive fewer cars; The planet that can absorb a lot of carbon dioxide is plankton in the oceans and forests on land, especially tropical rainforests. So, on the other hand, we need to protect forests and oceans, for example, by not deforesting and polluting the oceans to protect plankton. We can also help slow down the greenhouse effect by planting trees, reducing the use of disposable chopsticks, saving paper (wood for papermaking), and not trampling on lawns, so that they absorb more carbon dioxide.

Massive human burning of fossil fuels and deforestation have increased the amount of carbon dioxide in the air. Since carbon dioxide is a heat-insulating gas and has a stable nature, it increases the temperature of the earth and cannot be lowered.

Industrial coal emits carbon dioxide, and because carbon dioxide is a thermal insulation gas and has a stable nature, it increases the temperature of the earth and cannot be lowered.

The greenhouse effect, also known as the "flower house effect", is a common name for the atmospheric insulation effect. The atmosphere can make the solar short-wave radiation reach the ground, but a large number of long-wave thermal radiation released outward after the surface is heated is absorbed by the atmosphere, which increases the temperature of the surface and the lower atmosphere, because its effect is similar to the greenhouse for cultivating crops, so it is called the greenhouse effect.

Reason:The greenhouse effect is mainly caused by the excessive burning of coal, oil and natural gas in modern industrial society, and the carbon dioxide gas contained in automobile exhaust produced and emitted in large quantities enters the atmosphere.

Impact:Greenhouse gases effectively absorb infrared radiation emitted by the Earth's surface, the atmosphere itself, and clouds of the same gases. Atmospheric radiation is emitted in all directions, including to the Earth's surface below.

Greenhouse gases trap heat in the terrestrial tropospheric system, known as the "natural greenhouse effect". Atmospheric radiation is strongly coupled to the temperature level of its gas emissions. In the troposphere, the temperature generally decreases with altitude.

Characteristics of the greenhouse effect state:

The glass flower room and vegetable greenhouse that we can see in life are typical greenhouses, using glass or transparent plastic film to make greenhouses, so that sunlight can directly shine into the greenhouse and heat the indoor air.

Glass or transparent plastic film can prevent the hot air from being emitted to the outside, keeping the indoor temperature higher than the outside, so as to provide conditions conducive to the rapid growth of plants. The reason why this effect is called the greenhouse effect is also related to this principle.

The greenhouse effect is caused by an increase in the amount of greenhouse gases (carbon dioxide, methane, etc.) in the atmosphere.

The air contains carbon dioxide, and the levels have remained largely constant for a long time in the past. This is due to the fact that carbon dioxide in the atmosphere is always in a state of dynamic equilibrium of "growth and consumption". 80% of the carbon dioxide in the atmosphere comes from the respiration of people and plants, and 20% comes from the combustion of fuels.

75% of the carbon dioxide scattered in the atmosphere is absorbed and dissolved in water by water on the ground such as oceans, lakes, rivers, and air precipitation. Another 5 percent of carbon dioxide is converted into organic matter through plant photosynthesis and stored. That's why the volume fraction of carbon dioxide as a percentage of air components has remained the same for many years.

However, in recent decades, due to the rapid increase in population and the rapid development of industry, the carbon dioxide produced by breathing and the combustion of coal, oil, and natural gas has far exceeded the levels of the past. On the other hand, deforestation has led to the creation of cities and factories on large amounts of farmland, destroying vegetation and reducing the conditions for converting carbon dioxide into organic matter. In addition, the gradual shrinking of surface waters and the greatly reduced precipitation have reduced the conditions for absorbing dissolved carbon dioxide, and destroyed the dynamic balance between carbon dioxide production and transformation, so that the carbon dioxide content in the atmosphere has increased year by year.

The increase in the amount of carbon dioxide in the air has changed the temperature of the earth.

Carbon dioxide prevents surface heat from radiating into space and has the function of regulating the earth's air temperature. Without carbon dioxide, the Earth's average annual temperature would be 20 percent lower than it is today. However, if the carbon dioxide content is too high, the earth will feel like it is in a pot, and the temperature will gradually rise, forming a "greenhouse effect".

Gases that form the greenhouse effect, in addition to carbon dioxide, there are other gases. Among them, carbon dioxide accounts for about 75, chlorofluoroalkane accounts for about 15% 20, and there are more than 30 kinds of methane and nitric oxide.

The greenhouse effect is a phenomenon in which the global temperature rises due to an increase in the amount of carbon dioxide and other gases in the atmosphere. If carbon dioxide levels were to double what they are now, global temperatures would rise by 3.5 and the poles could rise by 10 and the climate would warm significantly. Rising temperatures will lead to increased rainfall in some areas, drought in some areas, increased intensity and frequency of hurricanes, and intensification of natural disasters.

More worryingly, many coastal cities, islands or low-lying areas will be threatened by seawater** or even swallowed by seawater due to rising temperatures, which will melt glaciers in the polar regions and raise sea levels. At the end of the sixties of the twentieth century, there was a drought in the pastoral areas of the lower Sahara of Africa that lasted for six years. Livestock were slaughtered due to a lack of food and pasture, and more than 1.5 million people died of starvation.

This is a classic example of the "greenhouse effect" that has brought disaster to mankind. Therefore, it is necessary to effectively control the increase in carbon dioxide content, control population growth, use fuel scientifically, strengthen afforestation, green the earth, and prevent the global catastrophe brought by the greenhouse effect.