At present, human activities have increased the amount of greenhouse gases in the atmosphere. Due to the burning of fossil fuels, water vapor, carbon dioxide, methane, etc., the emitted gases are absorbed and retained by infrared radiation, which causes the global surface temperature to rise, aggravate the greenhouse effect, and cause global warming. In order to solve this problem, the United Nations formulated the Framework Convention on Climate Change to control the emission of greenhouse gases and prevent the earth's temperature from rising and affecting the ecology and environment.
1. Sea level rise
The occurrence of hot weather on the earth does not mean that Miami’s lifestyle will be in line with Africa, but it does cause sea levels to rise. How can hot weather cause sea levels to rise? It turns out that too much temperature will cause the iceberg to melt. The continuous melting of sea ice and polar ice caps has increased the amount of water in the ocean, which has caused the sea level to rise.
If the beach is submerged by the sea, people will lose a lot of fun. At present, many cities in the world like Miami are facing the threat of rising sea levels.
2. Melting glaciers
Observing whether the glacier is melting does not require special equipment. After the frozen soil that originally covered the surface of the tundra melted due to the increase in surface temperature, vegetation now grows on it. Montana’s National Glacier Park has lost many of its magnificent beauty due to rising surface temperatures.
In this century, the glaciers in Montana National Parks have been severely reduced. In addition, the Himalayan glaciers are the main source of Ganges water. The Ganges River provides drinking water and irrigation water for 500 million people. It is said that the amount of water now decreases at a rate of 37 meters per year.
3. Heat wave attack
In 2003, the deadly heat wave that swept across Europe killed about 35,000 people, which may be a harbinger of the intense heat trend that scientists began to track in the early 20th century.
Heat waves not only inhibit some functions of the human body, but can also kill people. In the last 50 to 100 years, the frequency of intense heat waves has been two to four times higher than usual. It is predicted that in the next 40 years, there will be more than 100 times the situation. Experts predict that continuous heat waves will increase the frequency of fires and related diseases, and the average temperature of the earth will also rise.
4. Storms and floods
Experts use climate models to predict that rising global temperatures will affect precipitation. But no one wants to see more and more frequent super storms: in just 30 years, the frequency of severe hurricanes of category 4 to 5 has almost doubled. Warm seas increase the likelihood of severe storms. In July 2008, Hurricane Dolly swept across the Texas-Mexico border.
The warm water provided strength to the hurricane. Scientists correlate the temperature of the ocean and atmosphere with the probability of severe storms. In the past few years, the United States and the United Kingdom have been hit by super storms and floods. Many people died and property losses amounted to hundreds of millions of dollars.
While some parts of the world are hit by storms and floods, others are threatened by drought. As the climate warms, experts estimate that drought conditions may increase by at least 66%. The increase in drought conditions has reduced water supply and reduced the quality of crop production. This puts the global food production and supply in danger, and people are facing an increasing risk of starvation. Droughts around the world have exposed food shortages in rural areas. The picture shows the drought in a small village in the northeast of Nairobi.
Some mosquitoes photographed in California that may carry West Nile virus. Along with floods and droughts, the high temperature weather has created an excellent growth environment for the virus, and disease-carrying organisms such as mosquitoes, ticks, and rats have become more prosperous. The World Health Organization claims that new or recurring viruses are spreading rapidly, and they will survive in countries different from the past. Some tropical diseases may also occur in cold places. For example, mosquitoes infected Canadians with West Nile virus.
Approximately 150,000 people die each year from diseases related to climate change, and all respiratory problems caused by heat-related heart disease and malaria are on the rise. How is hay fever related to global warming? This is because warmer temperatures increase the production of smoke and increase the number of asthma attacks. At the same time, it further promotes the growth of weeds, which lays the blame for allergy sufferers.
7. Economic issues
As the temperature increases, the cost of making up for the losses caused by climate change is increasing. Severe storms and floods have caused agricultural losses of up to billions of dollars. At the same time, treating infectious diseases and preventing the spread of diseases also require a lot of expenditure. Extreme weather can also cause an extremely serious economic downturn.
Economic factors permeate almost every aspect of human life. With the increase in insurance premiums paid for health and families, consumers are facing rising food and energy costs. Governments are also suffering from the consequences of the tourism slump and the decline in industrial profits: soaring energy costs, food and water needs, post-disaster cleanup and tense border situations.
Ignoring the problem itself does not make the problem go away. A recent study by the Institute of Global Development and Environment at Tufts University showed that if nothing is done in the face of the crisis of global warming, mankind will get a bill of US$20 trillion in 2100.
8. Conflict and war
The reduction of high-quality food, water and land will increase the hidden dangers that threaten global security, which will lead to conflicts and wars. Security experts say that the conflict in Sudan’s Darfur region shows that although global warming is not the only cause of the crisis, its root causes can be traced back to the effects of climate change, especially the reduction of existing natural resources. The outbreak of violence in Darfur took place during the prolonged drought. In the past two decades, there was only a small amount of precipitation, or even no precipitation, while the temperature in the nearby Indian Ocean has been rising. On the one hand, the conflict in Darfur stems from the tension caused by global warming. Scientists and military scientists are analyzing the consequences of climate change, such as unstable food supplies that will trigger wars and conflicts, which shows that there is a link between violence and ecological crises. Countries with water shortages and food shortages have therefore planted security risks, and regional turmoil, panic, and aggression may occur.
9. Loss of biodiversity
The increase in global temperature has become more and more harmful to the survival of species. If the annual average temperature maintains a growth rate of 1.1 to 6.4 degrees Celsius, about 30% of the existing plants and animals will be threatened with extinction by 2050. These species will become extinct due to desertification, deforestation, ocean warming, and inability to adapt to the climate. Wildlife researchers have noticed more flexible migration. Animals migrate from the far north to the far south, looking for habitats needed to maintain their survival. For example, the red fox, a former North American inhabitant, now lives in the Arctic.
The habitat of the red fox has been affected by global warming temperatures. Humans are not immune. Desertification and rising sea levels threaten human habitats. When plants and animals have lost their adaptability to climate change, human food, fuel, and income are out of the question.
10. Destroy the ecosystem
Climate change and increased carbon dioxide are a test of the human ecosystem. It threatens fresh water, clean air, fuel and energy resources, food, medicines and other living conditions that affect human survival rather than life style . Coral bleaching is just one of the tangible effects of global warming on ecosystems.
There is evidence that climate change has an impact on natural ecosystems, which means that any change in the world is closely related to changes in land, water, and biological life. Scientists observed bleaching and dead coral reefs and found that this was caused by the warming of the sea. At the same time, the phenomenon of plants drifting and animals changing their habitats are also caused by the rise in air and water temperature or the melting of ice caps. Based on different temperatures, scientists’ computer models predicted scenarios of varying degrees of floods, droughts, forest fires, and ocean acidification, which eventually led to the collapse of the global ecosystem, and neither terrestrial nor marine ecosystems were spared.
Scientists study the impact of these changes on the earth, not to predict the future, but to help humans reduce behaviors that may cause climate change. If we know and understand the problem, take appropriate actions to improve energy efficiency, use sustainable clean energy and other green lifestyles, we can have a certain impact on the process of climate change.