Why is it getting hotter and hotter? Is 50 degrees normal in previous years?

It is true that the weather is getting hotter and hotter, but the temperature of 50 degrees can't be the norm, because no matter the average temperature or the summer temperature, as long as 50 degrees becomes the norm, the earth will basically be declared extinct, which is not alarmist. Many people may say that at present, extreme temperatures of 50 degrees will occur in summer in equatorial countries, African countries, South Asian countries and other low latitudes. For example, India experienced an extreme temperature of 50.6 degrees in 20 19, but it did not lead to the extinction of Indians. Only a hundred people died of heatstroke.

But don't forget that the extreme high temperature in India rarely lasts for more than a month, and the high temperature above 50 degrees only lasts for a day or two, which is not the normal state mentioned in the question at all, so we can't take India's example to measure the world.

At present, when we talk about global warming, we only refer to the big environment. In fact, the climate change caused by the greenhouse effect is more reflected in the frequent occurrence of extreme climate caused by the uneven distribution of meteorological systems, and it is inevitable that high temperature and low temperature will be staged alternately, because climate warming is not a simple continuous increase in temperature, but the normal meteorological system cycle of the earth will be destroyed after the regional temperature rises.

For a simple example, there are three circulations on the earth, which are based on solar radiation and rotation bias. In general, the three cycles will change with the change of temperature. For example, when the temperature in the equatorial region is heated and expanded, air will flow to the polar regions, but the flow process will become less dynamic or change direction due to the greenhouse effect, which will lead to the abnormality of three circulations, which will eventually affect the normal weather of the earth, rather than the continuous increase of temperature, so 50.

To put it another way, if 50 degrees refers to the average temperature of the earth, it is even more impossible. We live in a mid-latitude country in the northern hemisphere, so we seldom experience the cold at high latitudes. In fact, the polar regions are always cold, which makes the average temperature of the earth around 15 degrees, which is far from 50 degrees.

It is no exaggeration to say that the average temperature of the earth can rise by one or two degrees, even two or three degrees, which is barely acceptable, but without 50 degrees, life on the earth is basically updated at 30 degrees. Finally, the earth has existed for more than four billion years, and the climate system has long been stable, which is not something that human beings can change casually. Compared with the earth's era, the era of human industrial development is just a younger brother. Climate warming has a great impact on human beings, but it is only a tickle to the earth, but we can't emit greenhouse gases without restraint.