Natural disasters continue in Australia: forest fires have just been put out and are threatened by floods. Why are there so many extreme weather?

Australia's "New Newspaper" reported on Sunday that most of the mountain fires in Perth, Australia were extinguished due to rainfall, and the local fire department reduced the threat level of mountain fires. But unexpectedly, a devastating storm will sweep across the southwest, bringing the threat of floods.

It is reported that the fire in Australia destroyed at least 86 houses and affected about 65438+ 1 000 hectares of land. The fire caused serious damage to the local power infrastructure, and about 300 houses were still in a state of power failure. According to relevant sources, the fire has been controlled, some roads have been reopened and some residents have been allowed to return to their dormitories.

A rain helped put out the fire, but the Australian Meteorological Bureau predicted that bad weather would cause floods. As strong and low-pressure cyclones sweep through Western Australia, devastating storms will hit the southwest of the state. The wind speed can exceed 100 km per hour, and the rainfall can reach 100 mm. Midwest Natural Gas Company and Pass will be the first to be affected by bad weather.

What happened to gascoyne? Once a decade? Flood. Aerial photography records show that some areas are completely flooded, and only tree tops and buildings can be seen. According to Western Australia Governor Mark? Mcgowan said that because of the COVID-19 epidemic and the Pas mountain fire, some areas have been blocked for five days and had a hard week, and extreme weather appeared here again.

Forest fires that lasted for several months in Australia destroyed the forests in the southeast of the country, leaving nearly 3 billion animals dead or homeless. But the disaster may be far more than that. The Royal Australian Forest Fire Response Committee issued a mid-term investigation report, warning the local government to prepare for more frequent and serious natural disasters in the next few years, and calling on governments at all levels to coordinate their work and give priority to updating the forest fire early warning system.

Why are extreme weather frequent? ?

Extreme weather and climate events have brought great loss of life and property to human beings, especially in recent years, the occurrence of extreme weather and climate events has become more and more frequent and intense, which makes scientists very worried. So, what are the reasons for the frequent occurrence of extreme weather and climate events? Scientists believe that this is the result of internal and external factors such as the increase of greenhouse gas concentration, global warming, El Ni? o phenomenon, the dynamic movement of the earth itself, human intervention in nature, the change of solar radiation, and the deviation of the earth's orbit.

Scientists also believe that the earth has a natural feedback mechanism to climate change, which can expand or reduce external positive and negative forces to maintain the stability of the earth's climate system. Without such a mechanism, the climate system may go to extremes, either too hot or too cold. However, if the external pressure is too large, it may lead to the collapse of the climate system, so disastrous extreme weather and climate events will occur frequently.