What are the causes of global climate anomalies?

Two reasons lead to the "extreme" of the earth. Experts believe that "the global climate is a big system. When the atmospheric circulation in one place is abnormal, it will inevitably affect the abnormality in another place. " Experts say that another cause of abnormal climate is global warming. Climate warming actually includes two aspects: first, if there is no human activity, it will have a natural change itself, that is, before the industrial revolution; The second is human influence, that is, human activities, the most important of which is the greenhouse gas emitted by human activities, which makes the global temperature rise and may bring about frequent and intensified extreme weather and climate events. However, it is difficult for scientists to clearly distinguish between natural changes and man-made influences. It is the first time to verify that the increase of rainfall is related to warming. According to an investigation report published in Nature by the British Meteorological Research Center, the recent rainstorm is the result of climate warming. In addition to the British Meteorological Research Center, research associations from other countries also participated in this research. Scientists have used computers to point out the disastrous effects of global warming.