Global climate change data

Although global warming is not out of control at present, it will soon be out of control. Signs of danger can be seen everywhere, which is the challenge brought by climate change. How can we slow down global warming? What will happen to the earth if no measures are taken? The global temperature is rising, and every rise of 1 degree will have a serious impact on the earth. 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, the temperature rises by 6 degrees, and the consequences will be unimaginable. Imagine, if global warming intensifies in 2 1 century and the global average temperature rises gradually, where will the next super storm, the next scorching heat wave and the next major natural disaster come from? The debate is over. Scientists unanimously pointed out that the average temperature of the earth has indeed risen by nearly 65438 0℃, and the whole world is ready. Because early warning information is everywhere, human beings use thousands of ships, tens of thousands of land monitoring stations and satellites to monitor the earth in outer space. Scientists input the obtained data into the most advanced computer model to estimate the possible future of the earth.

The forecast results are worrying. Forty years later, the glaciers in the Himalayas, the water source for millions of people, are likely to disappear. The ice in Greenland may melt completely within 50 years. At present, the Amazon rainforest accounts for half of the world's biological species, but this rainforest is likely to become barren by the end of this century. According to the current data, the global average temperature has risen by 0.8℃, and Victoria, Australia's second most populous state, has suffered the most serious high incidence of forest fires in history. Many people regard this high incidence of impending fire as a warning of nature to remind the world of the impact of climate change.

"Australia is the driest continent on earth, although the global average temperature has only risen by less than 1 degree. A lot of land water sources have been lost here. Australia is currently experiencing the worst drought in a thousand years. " "Global warming not only means an increase in the global average temperature, but also completely changes the natural mechanism of the earth. At that time, there will be no drought here, there will be no floods there, and there will not even be a situation in which the drought and flood in the same place turn sharply. "

Macri Ness, a columnist of National Geographic, has been collecting climate model data for a long time to understand the damage caused by temperature rise 1 degree to the earth. "It is hard for people to imagine the impact of global warming on the future. I want to help you see this fact clearly. Because not everyone can understand the conclusion that automobile exhaust will melt Himalayan glaciers in 50 years. " Although experts estimate that the average temperature of the earth may rise by 6℃ in the future 100, this is not an irreversible result. Even if the earth's temperature changes by only 6 degrees, it will have a serious impact. "If the global average temperature changes by 6 degrees, 6 degrees lower is the temperature of the last ice age of the earth 18000 years ago. At that time, Oxford was surrounded by ice, and the thickness of ice sheet in some areas exceeded 1 mile. If the temperature drops by 6 degrees, the earth will once again usher in an ice age. What if the temperature rises by 6 degrees?

The initial changes were mainly manifested in the sky above the earth. The atmosphere is a buffer zone that separates the earth's surface from space. A small part of them are greenhouse gases, mixed water vapor, carbon dioxide, methane, argon nitrogen oxides and ozone. It is like a dome covering the earth. It is used to store enough solar reflection energy to maintain the normal temperature required by the earth's life. The higher the greenhouse gas content, the more heat energy will be stored, which will have a great impact on the global climate.

In the past 250 years, greenhouse gas emissions have increased dramatically. Because people are constantly looking for new methods, energy consumption is increasing. We didn't realize that carbon dioxide was the price we paid. All kinds of energy provide convenience for our modern life, but the carbon dioxide generated from it is discharged into the atmosphere and accumulated in the air we breathe. "The accumulation of carbon dioxide content will cause a global disaster. The dangerous content is 450 parts per million. Now it's 383 parts per million. Global warming will increase the average temperature of the earth by 1-2 degrees, which will lead to serious consequences.

If the temperature rises by 1 degree, some of the richest land in America will become desert again.

6000 years ago, most of the western United States belonged to the American desert. Small changes in the earth's orbit make the summer sunshine slightly weakened, but the whole western United States has changed a lot. The desert is covered with thin topsoil, and the dry sand is hidden a few centimeters below the surface. As long as the temperature rises by 1 or 2 degrees, the surface will lose moisture. In the 1930s, we realized how fragile the earth was. "Imagine that a persistent sandstorm with 20 times intensity will hit most parts of the western United States." Only a climate increase of 1 degree can turn this animal husbandry town into a dry and ruthless desert again. Now, topsoil can cover the desert stably, but how long can it last? A world where the global average temperature rises by 1 degree will make several happy families sad. Wealth will transfer. Changes in global climate patterns have led to the transfer of major crop producing areas.

The cause of global warming is the huge demand for energy. Every time you turn on the switch, plug in the plug, or press the button to start the appliance, there must be a power plant to provide electricity. Nearly nine floors of energy in the world come from fossil fuels, including coal, oil and natural gas. Burning prehistoric animal and plant fossils will inevitably produce carbon dioxide. These three fossil fuels are the biggest culprits of carbon dioxide emissions. Fossil fuels have improved the quality of life of generations, and it is hard for us to imagine a day without fossil fuels.

From the point of view of a single product, it seems that energy consumption is not much, such as making a pair of sunglasses or lighting a signboard, but carbon dioxide produced by human activities will accumulate in large quantities. If the temperature rises by more than one degree, the fragile balance of nature will be threatened. It is inevitable to go from the bottom of the deep tunnel to the highest peak in the world.