Why is there extremely cold weather?

How low is the temperature of No.65438 +0 to be called extremely cold? What is the definition of extreme cold weather? Li Xiaoquan, chief meteorologist of China Weather Network, said that there is no clear definition of extreme cold weather, because the climatic conditions in different regions are different. For example, when the coastal temperature in Guangdong is around 0, people will feel extremely cold, which can be called extremely cold; But in the north, 0 is common, not extremely cold. & gt& gt& gt NO.2 What is the reason for the extreme cold weather recently? The recent extreme cold weather in various places is related to the climatological Arctic Oscillation. The strong cold wave in Europe, the snowstorm in Japan and the low temperature in China are the chain of extreme weather events caused by the same abnormal atmospheric circulation. In addition, La Nina events also have a certain impact on cold weather. & gt& gt& gt Is the weather getting more and more abnormal? Both climatologists and meteorologists believe that the sudden change of temperature in an instant is a normal atmospheric change, but the reason is difficult to explain. The weather conditions in different places will not be the same. It is very common that some places are extremely cold and some places are extremely warm. However, overall, the frequency of extreme events has increased in recent years. & gt& gt& gt NO.4 Why is global warming still extremely cold? Climate warming is causing changes in other elements of the climate system, especially the changes of fresh water flux and salinity in the North Atlantic caused by polar ice melting, surface runoff and precipitation, which may further lead to the weakening or collapse of the global thermohaline circulation and make the earth's climate suddenly enter the cold climate stage from the rapid warming period. Therefore, it is normal for climate warming to cause climate change and enter a cold climate period. & gt& gt& gt NO.5 Did the unusually cold winter end "global warming"? In the opinion of many experts, abnormal cold events do not indicate the reversal of climate warming trend. On the contrary, it is a microcosm of the increasingly frequent extreme weather in the world under the background of climate warming, and it is still a top priority for people to scientifically deal with extreme weather disasters. & gt& gt& gt2 On February 3rd, two female tourists wrapped themselves up in front of the statue of the iconic urinating child in Brussels, Belgium. In order to protect Julian, the Belgian municipal authorities told him to "stop urinating" on the 2 nd and returned to normal after his body temperature rose. NO.6 will the cold current only affect Europe and Asia? The polar cold current will not stay in Europe and Asia. Because the cold air mass comes from the mainland, it is very dry, but it will carry water vapor when passing through the Mediterranean. The cold air will further intensify southward, so the snowfall in Algeria, Morocco and even northern Libya has just begun, and it will be more frequent later. & gt& gt& gt How long will the cold current last? Some experts of the World Meteorological Organization believe that the severe cold weather in Europe and other regions will last for several days, but how long it will last depends on when the blocking effect caused by high-pressure air mass ends. The weather forecast says that the cold current will leave on Sunday, but the forecast is very uncertain, so the cold weather is likely to last for several days. In addition, it is not that after the cold air, the temperature will return to its previous warmth. The long-term weather forecast says that February will be a cold month. & gt& gt& gt When will the weather get warmer? Since February 5, a strong cold air has invaded China, which will lead to a significant drop in temperature in most parts of China, but the duration will not be too long. After the influence of cold air is over, the temperature in China is expected to warm up. & gt& gt& gt NO.9 Will there be a "cold spring" this year? After beginning of spring, the general trend of the weather is warming. During this period, due to cold air activities, the temperature will inevitably drop. Whether it can reach the level of "chilly spring" is still difficult to make a definite judgment. & gt& gt& gt How to defend against the cold wave of NO? 10 detailed? 1, personnel should pay attention to add clothes to keep warm; In production, we should be prepared to defend against strong winds and cool down; 2, doors and windows, coamings, scaffolding, temporary structures and other structures that are easily blown by strong winds are fastened, and outdoor items that are easily affected by strong winds are properly placed; 3. Take shelter from the wind and notify outdoor workers to pay attention to safety; 4. Pay attention to the latest information reported by the media about gale cooling, so as to take further measures. roll