What is the reason why the earth's climate is getting hotter?

What are the causes of global warming? Global warming is a phenomenon related to nature. 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. However, when the greenhouse effect is accumulating, the energy absorbed and discharged by the geo-atmospheric system is unbalanced, and the energy is accumulating in the geo-atmospheric system, which leads to the rise of temperature and global warming. 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 threaten human survival.

What is the reason why the earth's climate is getting hotter? Is it harmful to human beings? There are many reasons for global warming, which can be summarized as: 1. The rapid population growth in recent years is one of the main factors leading to global warming. At the same time, it also seriously destroys the balance between natural ecological environment. With such a huge population, the annual carbon dioxide emitted by itself 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 at present, the increasingly serious environmental pollution has constituted a major global problem and is also one of the main factors leading to global warming. Now, the research on global climate change has clearly pointed out that the temperature of the earth's surface has started to rise since the end of last century. 3. Deteriorating factors of marine ecological environment At present, sea level changes are on the rise. According to the prediction of relevant experts, the sea level may rise by 50 cm by the middle of the next century. If no measures are taken, it will directly lead to the destruction and pollution of fresh water resources and other adverse consequences. In addition, a large number of toxic chemical wastes and solid wastes produced by land activities are continuously discharged into the sea; Major oil spills in seawater and the destruction of coastal ecological environment by human activities are the main factors leading to the destruction of seawater ecological environment. 4. Land erosion, desertification and other destructive factors. The factors of sharp decline in forest resources are worldwide, and the forest area has been greatly reduced due to natural or man-made factors. 6. The harm of acid rain The impact of acid rain on the ecological environment has attracted more and more attention all over the world. Acid rain will destroy forests, acidify lakes and endanger living things. At present, most of the acid rain in the world is concentrated in Europe and North America, and most of them occur in developed countries and some developing countries. Acid rain is also occurring and developing rapidly. 7. Factors that accelerate the extinction of species Life on the earth is a precious resource for human beings, and the diversity of life is the basis for human survival and development. But at present, the biological species on the earth are disappearing at an unprecedented rate. 8. Water pollution factors According to the water quality monitoring project of the Global Environmental Monitoring System, about 65,438+00% of the monitored rivers in the world are polluted. Since the beginning of this century, the water consumption of human beings is increasing rapidly, and the scale of water pollution is also expanding, forming a contradiction between supply and demand of fresh water. Therefore, the treatment of water pollution will be very urgent and important. 9. Toxic chemicals with increasing toxic waste pollution factors not only pose a serious threat to human survival, but also bring harm to the ecological environment on the earth's surface. 10 changes in the earth's periodic orbit The earth's periodic orbit changes from an elliptical line to a circle, and the circle is closer to the sun. According to a scientist's research, the temperature of the earth has been alternating between high temperature and low temperature, with certain regularity.

What causes global warming?

There are many reasons for global warming, which can be summarized as follows:

1. Population explosion factor

The rapid population growth in recent years is one of the main factors leading to global warming. At the same time, it also seriously destroys the balance between natural ecological environment. With such a huge population, the annual carbon dioxide emitted by itself 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

At present, the increasingly serious environmental pollution has become a major global problem, and it is also one of the main factors leading to global warming. Now, the research on global climate change has clearly pointed out that the temperature of the earth's surface has started to rise since the end of last century.

3. Deteriorating factors of marine ecological environment

At present, the change of sea level is on the rise. According to the prediction of relevant experts, the sea level may rise by 50 cm by the middle of the next century. If no measures are taken, it will directly lead to the destruction and pollution of fresh water resources and other adverse consequences. In addition, a large number of toxic chemical wastes and solid wastes produced by land activities are continuously discharged into the sea; Major oil spills in seawater and the destruction of coastal ecological environment by human activities are the main factors leading to the destruction of seawater ecological environment.

4. Land erosion, desertification and other destructive factors

5. Factors of sharp decline of forest resources

Worldwide, due to natural or man-made factors, the forest area is decreasing sharply.

6. Hazard factors of acid rain

The influence of acid rain on ecological environment has attracted more and more attention all over the world. Acid rain will destroy forests, acidify lakes and endanger living things. At present, most of the acid rain in the world is concentrated in Europe and North America, and most of them occur in developed countries and some developing countries. Acid rain is also occurring and developing rapidly.

7. Factors accelerating species extinction

Life on the earth is a precious resource for human beings, and the diversity of life is the basis for human survival and development. But at present, the biological species on the earth are disappearing at an unprecedented rate.

8. Water pollution factors

According to the water quality monitoring project of Global Environmental Monitoring System, about 65,438+00% of the monitored rivers in the world are polluted. Since the beginning of this century, the water consumption of human beings is increasing rapidly, and the scale of water pollution is also expanding, forming a contradiction between supply and demand of fresh water. Therefore, the treatment of water pollution will be very urgent and important.

9. Toxic waste pollution factors

More and more toxic chemicals not only pose a serious threat to human survival, but also do harm to the ecological environment on the earth's surface. The consequences of global warming

According to Xinhua News Agency, researchers at the Worldwatch Institute in the United States recently warned that global warming will lead to a reduction in global agricultural production, and food shortages may occur in the next century. The researchers came to this view after analyzing the information released by the United Nations and the National Academy of Sciences and the trend of the world rice market.

According to world observation research, global warming and the decline of groundwater level will become the direct cause of global food supply shortage, which is reflected in the rising trend of global rice prices.

Global warming will also lead to sea level rise, and coastal areas will be flooded, and Daxi Island will be flooded in this way.

According to statistics released by the United States, even though the global grain harvest last year and the prices of wheat and corn fell, the price of rice still rose by 30%, reaching $260 per ton.

A research report published by the National Academy of Sciences last year showed that the abnormal temperature rise in the rice growing season would reduce the harvest. In addition, the decline of groundwater level and the depletion of wells in many parts of the world will also affect food production.

The reason of the earth's climate change is that the angle of direct sunlight is different when the earth rotates. The smaller the direct angle, the lower the temperature, and vice versa. . . . .

(Note: The temperature is only related to the direct sunlight angle)

What are the causes of global warming? Mainly due to the emission of greenhouse gases such as carbon dioxide, the number of gases absorbing heat in the atmosphere has increased. The heat emitted from the earth's surface is absorbed by the atmosphere and the temperature rises.

What makes the earth warm Global warming refers to the phenomenon that the temperature of the earth's atmosphere and ocean rises over a period of time, mainly referring to the temperature rise caused by human factors. The main reason may be the excessive emission of greenhouse gas (carbon dioxide).

In recent 100 years, the global average temperature has experienced four fluctuations from cold to warm, and the overall temperature is on the rise. Since 1980s, the global temperature has obviously increased.

The global atmosphere and the earth's surface are like a huge "glass greenhouse", which keeps the earth's surface at a certain temperature all the time and creates an environment suitable for human beings and other creatures to survive. In this system, the atmosphere can not only let the solar radiation penetrate to the ground, but also prevent the ground radiation loss. We call this protective effect of the atmosphere on the ground the greenhouse effect of the atmosphere. The gas that causes the greenhouse effect is called "greenhouse gas", which allows the short-wave radiation of the sun to pass freely and absorbs the long-wave radiation emitted by the surface. These gases include carbon dioxide, methane, chlorofluorocarbons, ozone, nitrogen oxides and water vapor, of which carbon dioxide is the most important in the global temperature change map in the past 1000 years. In the past century, the global climate has gradually warmed, and at the same time, the content of greenhouse gases in the atmosphere has also increased dramatically. Many scientists believe that the aggravation of the greenhouse effect caused by the massive emission of greenhouse gases is the fundamental cause of global warming.

When humans burn coal, oil, natural gas and trees, a large amount of carbon dioxide and methane enter the atmosphere, which warms the earth, makes the carbon cycle unbalanced and changes the energy conversion form of the earth's biosphere. Since the industrial revolution, the content of carbon dioxide in the atmosphere has increased by 25%, far exceeding all the historical records of the past 654.38+600,000 years that scientists may have investigated, and there is no sign of slowing down at present.

The increase of carbon dioxide emissions in the atmosphere is the fundamental cause of global warming. According to the investigation of the International Energy Agency, the United States, China, Russian and Japanese account for almost half of the global carbon dioxide emissions. The survey shows that the United States ranks first in the world in carbon dioxide emissions, with an annual per capita carbon dioxide emissions of about 20 tons, accounting for 23.7% of the global total. The annual per capita carbon dioxide emission in China is about 2.5 1 ton, accounting for 13.6% of the global total.

What are the main causes of global warming? 1 Some gases emitted by human beings, such as carbon dioxide, methane and chlorofluorocarbons, have the function of absorbing infrared radiation. These gases are called "greenhouse gases". They are rich in the atmosphere, just like a cover, which blocks the heat emitted from the ground. Like a "greenhouse", it causes the surface temperature to rise. Scientists call this phenomenon "the greenhouse effect". There is a saying that the greenhouse effect is the main cause of global warming. This is put forward by scientists after investigating the correlation between the increase of carbon dioxide emissions and the rise of temperature in the past 100 years. It is believed that controlling greenhouse gas emissions may control global warming and prevent disasters such as ecological balance destruction, agricultural variation and glacier melting. Of course, according to modern environmental science research, the correlation between greenhouse effect and global warming is still being further explored. However, people do feel the abnormality of global warming. In this regard, scientists suggest that controlling greenhouse gas emissions may be a preventive measure. In the past, climate change was mainly a natural fluctuation of climate. At that time, human productivity was not developed, or human beings were not produced at all. However, with the industrial revolution, the ability of human activities to influence climate change is getting stronger and stronger. (Note: The Intergovernmental Panel on Climate Change, established by the World Meteorological Organization and the United Nations Environment Programme, conducted three authoritative assessments of climate change. The conclusions of the three assessments are more and more positive, and the climate change in the last 50 years is mainly caused by human activities. As time goes on, the smoke from these factories and the exhaust from cars are heating the earth. This effect mainly comes from greenhouse gases in industrial waste gas, of which carbon dioxide is the most important. The increase of greenhouse gas concentration in the atmosphere is mainly caused by human activities. This influence is mainly divided into two aspects: on the one hand, greenhouse gases, such as carbon dioxide, nitrous oxide and methane directly produced by fossil fuel combustion and biomass combustion, are directly discharged into the atmosphere, and a large number of such substances are also produced in industrial production; On the other hand, large-scale deforestation has greatly reduced the number of plants that absorb carbon dioxide in the atmosphere. The combination of these two aspects, between an increase and a decrease, makes the content of carbon dioxide in the atmosphere more and more, raising the global temperature.

Remember to adopt

What is the reason for the hot weather in recent years? The landlord may have to wait until later, and it will not be so hot on August 20, and ........... may even have to wait until autumn ... Why is the weather so hot this year? The reasons are as follows: The most important thing is that due to global warming, the greenhouse effect is intensified, leading to extreme weather, which is prone to extreme precipitation and floods; It is easy to cause no rain for a long time, resulting in extreme drought; Or cause extremely long-term high temperature weather, forming a heat disaster; For example, the continuous precipitation in Northeast China in May, June and July this year, the freezing rain and snow disasters in Guangdong and southern Hunan in early 2008, and the continuous high temperature in North China this year are the best examples.

What is the reason for leg pain when the weather is hot and cold? Lumbar disc herniation compresses nerve roots, which will cause symptoms on lower limbs. However, most patients with lumbar disc herniation will be aggravated when the weather turns cold, and their back muscles will spasm and small blood vessels will contract after catching cold, which will affect the local blood circulation and thus affect the nutritional supply of the disc. At the same time, muscle spasm can increase the pressure of intervertebral disc, especially for degenerated intervertebral disc, which can cause further loss and nucleus pulposus protrusion. I suggest you make a diagnosis. If it is lumbar disc herniation, I suggest you go to Jin Shu Jian Yao Pill official website for detailed consultation.

What are the causes of global warming? In the past, people always blamed the global temperature rise in this century on the greenhouse effect brought by human civilization, but now more and more scientists believe that the change of the sun itself may be another factor leading to the climate change of the earth. Some scientists believe that the change of the sun is the real cause of global warming. Now, experts are exploring three aspects that the sun may cause changes in the earth: the full brightness of the sun is considered to be a factor affecting the temperature change of the earth; The ultraviolet rays of the sun are considered to be the factors affecting wind power and atmospheric ozone content; Solar magnetic storms and subatomic particle storms are considered to be the factors that affect the precipitation and cloud cover of the earth. An important fact that attracts the attention of all scientists who study climate change is that from 1880 to now, the global average temperature seems to be rising gradually, increasing by nearly 1 Fahrenheit. What is the reason? Many scientists say that they can't know exactly how much climate warming is caused by nature and how much is caused by human activities. It is generally believed that gases that can release heat, such as carbon dioxide, are important reasons for the temperature rise. But carbon dioxide is not only a natural part of the atmosphere, but also released by cars, factories and the burning of oil, coal and wood all over the world. Carbon dioxide and other greenhouse gases are increasing, which prevent sunlight from reflecting back into space and make the earth warm.