It snowed in the north and the temperature in many places in the south exceeded 31 degrees. Why is the temperature difference between the north and the south so high?

In mid-to-late November, winter has already entered in northern cities. This is the same as usual, but winter is getting later and later in southern cities.

Logically speaking, in southern cities around late November, the temperature will basically remain in the teens. According to this trend, it will slowly decrease, and then it will rain lightly, especially here in Shanghai. The weather is very wet and cold once it rains lightly before winter begins. Although this kind of humidity is not very low in temperature, it is bone-chilling. Like Shanghai. Southern cities are actually extremely cold in winter, and since there is no heating in the city, most of them rely on facilities such as thermal air conditioners or heaters, which are very dry and uncomfortable to use. The weather in southern cities in November is becoming increasingly warm and wintery, which is inseparable from global warming.

Northern cities, especially cities in the Northeast, actually started heating very early. Heating is already started early around September to October because of the special geographical location in the north. Beijing also provides heating at a later time than Northeast China. In fact, the heating equipment is quite comfortable, at least it is not that dry and uncomfortable. Compared with cities like Shanghai where heating air conditioners are often turned on in winter, radiators are actually much friendlier. More and more people are choosing floor heating when renovating, which gives people a better experience than radiators. According to the meteorological department, the high temperature in southern cities is actually only short-lived. After the cold air from the north hits, southern cities will also experience a steep cooling in a short period of time.

For example, the maximum temperature in Changsha is 30 degrees, but it quickly drops to about 9 degrees a few days later. In fact, it is very necessary for people to add clothes in time according to the weather forecast. People who are prone to colds or have low immunity, such as the elderly and children, must add clothes in time, otherwise they will easily get sick. People with cardiovascular disease should also pay attention to their emotions and take medication on time.

The La Niña phenomenon has led to a saying that the winter of 2021 will be a cold winter, or even an extremely cold winter. This statement has been overturned. It will affect climate factors, but it has nothing to do with the surface temperature. In contrast, the La Niña phenomenon cannot actually change the trend of global warming.