Why is there usually a "cold winter" weather when La Nina happens?

When La Nina occurs, the global climate will become more abnormal, for example, it will be hotter when it is hot and especially cold when it is cold. Therefore, it is a phenomenon that affects climate change. When this phenomenon occurs, people will feel that winter is very cold. For example, the winter of 2020 is the year of La Nina, which is very cold. La Nina may occur in the winter of 2020, so people need to prepare for the cold in advance.

When it comes to La Nina, many people will definitely think of El Ni? o. These two phenomena are actually closely related. For example, when the El Ni? o phenomenon occurs, it will be found that the cold current in Peru will warm up in winter and then rise, so that fish will emerge in the sea, and people will fish on the surface of sheep at this time, which is also a reason for the formation of Peruvian fishing grounds. So, when this happens, it will get warmer in winter. Moreover, with the deepening of research, scientists found that when El Ni? o appeared, extreme weather frequently appeared everywhere, so El Ni? o phenomenon was not a good thing.

The occurrence of La Nina phenomenon may have become inevitable, and people need to make predictions in advance and then make preparations. In fact, scientists also find it a bit strange, because La Nina and El Ni? o often appear alternately. La Nina just appeared in 2020 and may stop for a while afterwards. But the weather changes suddenly, so there will be unexpected situations. This winter, the freezing in China is even colder, and there will be a lot of cold air invading. So people who are afraid of cold can buy warm clothes in advance, or install heating or heating tools at home.

Extreme weather will cause natural disasters, so people need to make all preparations in advance to minimize the losses, so that people can spend such cold winter weather smoothly.