What extreme weather happened in the world in 20021year? Why are extreme weather increasing?

There is a large-scale heavy rainfall in the world, such as the flood disaster in Zhengzhou, China. These are the effects of human activities.

Climate change and extreme weather In short, more and more extreme weather is inseparable from climate change, but the relationship between them is not as simple as causality.

For some people with scientific knowledge, "the extreme weather on the earth will become more and more serious" has almost become a kind of knowledge. A study found that the extreme weather events in the first decade of this century were almost 2.5 times that in the 1980s.

Understanding the relationship between climate change and extreme weather events is a research topic of attribution science. This attribution science can be used to explain the influence of climate change on extreme weather events and its relationship with normal weather changes. Simply put, their relationship is like the relationship between smoking and lung cancer.

An old smoker who smoked for 40 years was unfortunately diagnosed with lung cancer. Although the doctor can't assert that his lung cancer is caused by smoking, the doctor can confirm that 40 years of smoking history has greatly increased his chances of developing lung cancer.

Human-induced "greenhouse effect" When people hear about climate change, most people think of global warming, that is, the rise of the average temperature on the earth's surface. In addition to natural factors, the culprit of all this is fossil fuels, and a large amount of carbon dioxide produced by combustion is discharged into the atmosphere, blocking infrared rays that should radiate back into outer space. This is the "greenhouse effect" that makes the earth's temperature rise gradually.

However, the impact of climate change is not only that, but global warming will also cause various side effects, such as melting glaciers or perennial droughts, as well as increasing hurricanes.

In the face of extreme weather events like Hurricane Katrina, in order to correctly understand the impact of climate change on it, scientists need to find out whether Hurricane Katrina will still happen if humans stop burning fossil fuels.

If human beings don't respect and protect nature, they will be punished by nature.