What are the characteristics of climate compared with weather?

Climate warming refers to the phenomenon that the temperature of the earth's atmosphere and ocean rises in a period of time, mainly referring to the temperature rise caused by human factors. Probably because of excessive greenhouse gas emissions. Climate warming

Climate warming is caused by people burning fossil minerals to generate energy or cutting them down and burning them. Because these gases have high permeability to visible light from the sun, they have high absorption to long-wave radiation reflected from the earth, which is generally considered to cause global warming. In the past 100 years, the global average temperature experienced two fluctuations: cold → warm → cold → warm, showing an overall upward trend. Since 1980s, the global temperature has obviously increased. The consequences of global warming will redistribute global precipitation, melt glaciers and frozen soil and raise sea level, which will not only endanger the balance of nature, but also threaten human food supply and living environment. Climate warming is a "natural phenomenon". Because people burn minerals to generate energy, or cut down forests and burn them, they produce many greenhouse gases, such as carbon dioxide. Because these greenhouse gases are highly permeable to visible light radiated by the sun, they warm the climate reflected by the earth.

Long-wave radiation has strong absorption, which is often called "greenhouse effect", leading to global warming. In the past 100 years, the global average temperature experienced two fluctuations: cold → warm → cold → warm, showing an overall upward trend. Since 1980s, the global temperature has obviously increased. The consequences of 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 food supply and living environment.

Edit the background of this paragraph.

There are many factors that affect the change of the earth's surface temperature, but it is generally believed that there are two main categories: natural factors and human activities. As far as natural factors are concerned, solar activity, volcanic activity and low-frequency vibration in the climate system may affect global or regional temperature changes. Due to the uncertainty of the historical sequence data of solar radiation and volcanic activity, and people's understanding of how the climate system responds to the change of solar output radiation is still very preliminary, strictly speaking, climate warming.

At present, it is impossible to accurately evaluate its impact on global and China temperature changes. Decadal low-frequency vibration of ocean-atmosphere system, such as North Atlantic Oscillation (NAO), Arctic Oscillation (AO), Pacific Decadal Oscillation (PDO) or ENSO Decadal Vibration, may also have an important impact on global and regional temperatures. Human activities mainly affect the change of surface temperature through land use change and greenhouse gas and aerosol emissions. Urbanization and urban heat island effect can also be regarded as local manifestations of land use change. The recent IPCC report pointed out that the global warming in the past 100 years, especially in the past 50 years, is likely to be mainly caused by the increase in the concentration of greenhouse gases such as CO2 in the atmosphere. This conclusion is mainly based on a large number of observation facts and climate model simulation analysis. Generally, the global atmosphere-ocean circulation coupling model is adopted in simulation research, and natural forcing factors such as solar activity and volcanic activity, as well as greenhouse gases and sulfide aerosols emitted by human beings are considered to simulate the changes of global annual average temperature in the 20th century. These studies show that global warming in the 20th century cannot be simulated when only natural forces are considered. When we only consider the impact of human activities, we can basically simulate the global warming trend in the 20th century. When all forces are input, the simulated and observed temperature changes are the most consistent. According to the IPCC report, the main factors affecting climate change in the 20th century are solar activity, volcanic activity and human activities, and the greenhouse gases emitted by human activities have played a leading role in global warming in recent 50 years. The Arctic became an island for the first time because of the warming climate.

Most scientists also believe that human activities not only lead to a significant increase in the global average surface temperature, but also lead to an increase in warm nights, warm days and heat waves, and a decrease in Leng Ye, cold days and cold waves. Man-made global warming also leads to the melting of alpine glaciers, the rise of global sea level and the strengthening of global water cycle. However, many scientists also realize that the factors leading to climate change are very complicated and need further study in the future. Due to the defects of climate observation data, the imperfection of climate model and the complexity of factors and mechanisms affecting climate change, the conclusion on the causes of climate change is still uncertain. Global warming refers to the increase of global temperature. In recent 100 years, the global average temperature has experienced two fluctuations: cold-warm-cold-warm. Generally speaking, the global warming trend is caused by greenhouse gas emissions. Since 1980s, the global temperature has obviously increased. 198 1 ~ 1990, the global average temperature increased by 0.48℃ compared with 100 years ago. The main reason for global warming is that humans have used a lot of fossil fuels (such as coal and oil) and released a lot of greenhouse gases, such as carbon dioxide, in the past century. Because these greenhouse gases have high permeability to visible light radiated by the sun and high absorption to long-wave radiation reflected by the earth, this is commonly called "greenhouse effect", which leads to global warming. Climate Warming-the Factor of Population Explosion

The specific reason for the global warming trend is that people burn fossil minerals to generate energy or cut down forests and burn them to produce carbon dioxide that enters the earth's atmosphere. According to the climate model, the Intergovernmental Panel on Climate Change predicts that by 2 100, the global temperature will rise by about 1.4-5.8 degrees Celsius (2.5- 10.4 degrees Fahrenheit). According to this forecast, in the past 65,438+00,000 years, the global temperature will change dramatically, which will have a huge potential impact on the global environment. In order to stop the global warming trend, the United Nations specially formulated 1992 "United Nations Framework Convention on Climate Change", which was signed into effect in the Brazilian city of Rio de Janeiro in the same year. According to this convention, developed countries agreed to reduce their carbon dioxide and other "greenhouse gases" into the atmosphere to the level of 1990 by the year 2000. In addition, countries with total carbon dioxide emissions accounting for 60% of the global total carbon dioxide emissions in these years have also agreed to transfer relevant technologies and information to developing countries. These technologies and information transferred from developed countries to developing countries will help developing countries actively respond to the challenges brought by climate change. As of May 2004, 189 countries have formally ratified the above convention.

The reason for editing this paragraph.

1, population explosion factor The population explosion in recent years is one of the main factors leading to climate warming. At the same time, it also seriously threatens the balance between the 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. [1] Climate warming-atmospheric environmental pollution factors

2, atmospheric environmental pollution factors At present, the increasingly serious environmental pollution has constituted a major global problem, and it is also one of the main factors leading to climate warming. Now, the research on 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. Destructive factors such as land erosion and desertification 5. The world's forest resources have been drastically reduced, and the forest area has been greatly reduced due to natural or human 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. Climate Warming-Water Pollution Factor

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, the change of the earth's periodic orbit, climate warming

The earth's periodic orbit changes from ellipse to circle, which 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.