It's too hot to immigrate to the South Pole.

There is such a discussion article in Science magazine called? Climate change: Are we on the brink of global warming? ? This is the first time that human beings have taken the initiative to consider this issue. Global warming? This word is also the first time to appear in professional literature. Sunlight is short-wave radiation, which can directly irradiate the surface of the earth through the earth's atmosphere. This is the energy received by the earth (yellow arrow), and the red arrow is the long-wave radiation from the earth, which is partially absorbed by greenhouse gases.

Greenhouse gases mainly include methane, carbon dioxide, methane, ozone, nitrous oxide and water vapor. Their accumulation in the sky reflects more energy back to the earth, which is the process of global warming. The more and higher the content of greenhouse gases, the more obvious the greenhouse effect. At present, the greenhouse gas that warms the earth is mainly carbon dioxide, and the development of human civilization relies too much on fossil energy, so a lot of carbon dioxide is produced.

The above is just one of the reasons. Plants on the earth can consume carbon dioxide through photosynthesis. On the one hand, human beings release more carbon dioxide into the atmosphere, on the other hand, they are still cutting down trees and reducing the vegetation area. Under the two effects, more and more carbon dioxide will be produced, and the greenhouse effect will become more and more obvious.

This temperature rise will lead to the melting of some permafrost regions in the world, such as the polar regions, the roof of the world (grass growing in the high altitude area of Mount Everest) and the tundra of Siberia. Melting glaciers will lead to rising sea levels. Scientists have calculated that if all the poles melt, the sea level will rise by 67 meters. In fact, this is not the most important thing. Melting glaciers and tundra will release a large number of greenhouse gases such as methane, and the greenhouse effect caused by methane is 25 times that of carbon dioxide.

This time, NASA scientists carried detection equipment to carry out large-scale monitoring over the Arctic by plane, and almost found more than 2 million methane hot spots. What are the hot spots here? The content of methane in the air is three parts per million. . The global temperature rise leads to the melting of the ice sheet, and a large amount of methane is bound to be released in the process. The release of methane once again intensifies the greenhouse effect, which makes the temperature rise even higher, which is the result of an disgusting cycle.

At the beginning of this month, a monitoring point on Seymour Island in Antarctic continent measured a high temperature of 20.75 degrees Celsius, which is the highest temperature ever measured by human beings. Although this temperature only lasted for one day, it was a fluctuating process, and then the temperature dropped. But this is enough to attract our attention, and the impact of global warming is imminent. Of course, now the direct point of the sun is in the southern hemisphere, and in less than a month, the direct point of the sun can come to the equator and continue to move northward. It's still summer in the southern hemisphere, and the temperature may be a little higher.

Global warming, melting glaciers and tundra may also release super viruses, which may have been frozen for tens of thousands of years, but if the temperature recovers, they can still remain active, which is not good news for life on earth. Our immune system may not be very resistant to this new virus. After all, human development has adapted to tens of thousands of years, but those frozen viruses are standing still.

Hawking said on 20 10, an American video sharing website, that he believed that the earth would collapse ecologically BigThink 200 years. If human beings want to survive, they must emigrate to outer space and find new homes. Hawking also mentioned in another speech that the earth will get hot in 2600? Fireball? .

We should pay enough attention to this problem, but some countries are really selfish. 2065438+In June 2007, Tepran announced that the United States had withdrawn from the Paris Climate Agreement and resumed its plan to exploit fossil fuels. This agreement was unanimously agreed by the representatives of 195 countries around the world, and promised to control the annual average temperature rise of the earth within 2 degrees Celsius. But unfortunately, some countries withdrew early.

We should not underestimate the problem of climate change, especially global change. There have been five mass extinctions in the history of the earth, except for the extinction of dinosaurs 65 million years ago, almost all of which were caused by drastic environmental changes. If there is a sixth mass extinction event on earth, I hope it is not because of our greed.

Text/Du Ruo, image source network invasion and deletion.

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