In many places, the temperature dropped by more than 65438 00℃. Is the occurrence of extreme weather related to human activities?

The main cause of extreme weather is global warming, and the chief culprit of global warming is human beings and human activities.

I. Extreme Weather First of all, extreme weather and climate events refer to historical rare meteorological events that occur in a certain area within a certain period of time, and their occurrence probability is usually less than 5% or 10%.

Extreme weather and climate events can generally be divided into extreme high temperature, extreme low temperature, extreme drought, extreme precipitation, etc., which are generally characterized by low probability of occurrence and great social impact. However, with global warming, the frequency of extreme weather and climate events has changed, showing an increasing trend.

The main cause of global warming is carbon dioxide produced by uncontrolled human activities.

Global warming Global warming is because when people burn fossil fuels, such as oil and coal, or cut down forests and burn them, they will produce a lot of carbon dioxide, that is, greenhouse gases. These greenhouse gases have a strong permeability to visible light emitted by the sun, but they have a strong absorption to long-wave radiation emitted by the earth, and they can strongly absorb infrared radiation from the ground, leading to an increase in the temperature of the earth, which is the greenhouse effect.

Global warming will redistribute global precipitation, melt glaciers and frozen soil and raise sea level, which will not only endanger the balance of natural ecosystems, but also threaten human survival.

On the other hand, due to the greenhouse gas emissions from the land, the temperature in the mainland rises and the temperature difference with the ocean decreases, which in turn leads to the slow air flow and the smog can not be dispersed in a short time, which leads to the increase of smog weather in many cities and affects human health.

The global climate system is warming faster, the phenology is advanced, glaciers are melting, sea levels are rising, many historical records are refreshed, and extreme climate is increasing.

The COVID-19 epidemic we are experiencing now is the spread of diseases caused by rising temperatures.

Third, the human crisis, rising temperature will have an impact on human physiological functions, the probability of getting sick will be increasing, and various physiological diseases will spread rapidly and even breed new diseases. Ophthalmic diseases, heart diseases, respiratory diseases, digestive diseases, viral diseases and bacterial diseases will cost more and more money to see a doctor, and more and more people will die. Cancer will become more and more popular; Sudden death will become more and more common.

COVID-19 brought us confirmation.

After 20 19, extreme weather intensified, and the Arctic vortex invaded North America, and the United States suffered a very serious cold wave. Australia, on the other hand, is facing an extremely serious heat wave, with the hottest summer in history. South China suffered a rare persistence at the beginning of this year? Winter rain? On the contrary, the drought in the north continues to develop, and the weather in the north and south is very abnormal. Not long ago, tropical cyclone Idai brought devastating floods, storms and storm surges to Mozambique, Zimbabwe and Malawi in southern Africa. The local death toll exceeded 750, and thousands of square kilometers of land were flooded, which was frightening.

With the increase of global warming and extreme weather, the speed of climate change is so fast that human beings must take immediate action to truly avoid the arrival of a major crisis affecting all mankind.