The sun gives the earth temperature and energy. It can be said that without the sun, there would be no life on the earth today. Our lives are inseparable from the sun, but recently with global warming , the temperature of the earth has begun to rise, and extreme high temperatures have also brought a lot of pain to people. However, a study found that our earth is now moving away from the sun, so do we not need to worry about climate warming? Will it not get hotter and hotter in the future?
How hot will the summer of 2022 be?
In the summer of 2022, extreme high temperature weather occurred in many places around the world. For example, record-breaking temperatures have also occurred in many places in Europe. The high temperatures not only increased the temperature, but also brought severe drought to the local areas. The European Commission's Joint Research Center has warned that the current drought in Europe may be the worst in 500 years.
It also predicted that severe drought in Europe will worsen and could affect 47% of the continent. Drought also caused river water levels to drop, and even the water levels of the Danube River dropped, revealing the German warships from World War II.
Our country has also been affected by the heat wave. According to media reports, since July 21, high temperature weather has continued to develop in southern my country. The number of days with high temperatures above 35℃ in Sichuan Basin, Jianghan, Jianghuai and most of Jiangnan has generally exceeded 15 days, and more than 20 days in some areas. Affected by the high temperature and lack of rain, moderate to severe meteorological drought occurred from the Sichuan Basin to the middle and lower reaches of the Yangtze River, with local extreme drought conditions. The continuous high temperature has caused the temperatures at 46 national stations in my country to exceed historical extremes.
And according to the recent monitoring and evaluation of National Climate Center , taking into account the average intensity, scope and duration of high-temperature heat wave events, the comprehensive intensity of regional high-temperature events from June 13 this year to the present has reached the level of 1961 with complete meteorological observations. The strongest ever recorded.
North America was also hit by a heat wave, during which many North American records were broken. In July 2022, an intense and deadly heat wave swept across the United States. More than 100 million people are under heat warnings, with temperatures at or above 32°C in more than 85% of the country. In short, the impact of this year's extreme high temperature is so large and wide-ranging that people can hardly imagine it.
Research has found that the earth is now moving away from the sun
The earth's orbit around the sun is slightly elliptical. Therefore, the Earth's distance from the Sun changes throughout the year. However, the average distance from Earth to the Sun is about 93 million miles (150 million kilometers). Scientists also call this distance an astronomical unit . The universe is a big place, and researchers sometimes use astronomical units to express the distance between celestial objects. For example, Jupiter orbits about 5 astronomical units from the sun.
As time goes by, the sun is getting further and further away from the earth. The Earth's movement away from the Sun indicates that the solar system is aging. The main reason for this phenomenon is that the Sun continues to lose mass. Through the mechanism of nuclear fusion, the sun converts its mass into the energy that powers life on Earth. And according to scientist Einstein (E = mc^2) the nuclear fusion reaction that drives the sun converts mass into energy. Because the sun is constantly producing energy, it is also constantly losing mass. Every second, a large number of light nuclei inside the sun are converted into heavier elements and isotopes through the process of nuclear fusion.
All in all, the Sun loses about 4 million tons of mass every second. This loss of quality, no matter how small, increases over time. Over time, mass loss due to nuclear fusion causes the Earth to move away from the Sun by about 16 centimeters per year.
Eventually, over the next few billion years, the Sun will lose about 0.1% of its mass. Although 0.1% sounds like a small number compared to the massive Sun, it's actually equivalent to the entire mass of Jupiter, the largest planet in the solar system. It is almost 318 times the total mass of the Earth. As its mass decreases, the Sun's gravitational pull on Earth weakens over time.
So now that the earth is moving away from the sun, do we not need to worry about climate warming? Will it not get hotter and hotter in the future?
Many people believe that the Earth is closer to the sun in the summer, which is why it is hotter. Likewise, they believe that the Earth is furthest from the sun in winter. While there is some truth to this idea, it is incorrect.
Indeed, the Earth's orbit is not a perfect circle. Because the Earth's orbit around the Sun is elliptical, during part of the year the Earth is sometimes closer to the Sun and sometimes further away. However, in the Northern Hemisphere, winter is when the earth is closest to the sun, and summer is when the earth is furthest from the sun! So this change in Earth's distance over the course of a year doesn't have much of an impact on our weather and climate compared to the distance from the Sun. The reason why the earth's seasons are different is because the earth's axis , the seasonal times in each hemisphere are opposite. This is because when the North Pole is tilted toward the sun, the northern hemisphere faces the sun at a greater angle than the southern hemisphere. So the Northern Hemisphere gets warmer. This represents the summer months in the Northern Hemisphere and the winter months in the Southern Hemisphere. As the Earth continues its orbit, the South Pole eventually tilts toward the Sun, reversing the seasons in each hemisphere. We now know that the main factor affecting Earth's seasonal temperatures is the Earth's axis, not the Earth's distance from the Sun.
So although the distance between the Earth and the Sun is increasing, the speed is very slowly. This small change pales in comparison to the annual change in the distance between the Earth and the Sun due to the planet's elliptical orbit. Therefore, although the earth is getting farther and farther away from the sun every year, it will have no impact on the earth's climate and temperature in the short term. According to calculations, at the current rate, the earth's temperature will drop slightly in about 1 billion years, and the impact of solar energy on the earth at that time will be reduced by about 0.4%.
In short, if we want to prevent it from getting hotter and hotter in the future, we still need to reduce the emissions of greenhouse gases . If people still don’t make changes in the future, the future will get hotter and hotter. That’s it for today. I’m Fire Sect Lord. See you next time. #The water level of the Danube River dropped and exposed the German warships from World War II# #The European Union said Europe may encounter the worst drought in 500 years# #Will this year's ultra-high temperature heat wave become the norm in the future?# #46 countries station temperatures Breaking through the historical extreme #
