Changchun has extreme ice and snow weather. Why is it so cold across the country this year?

This year’s extreme ice and snow weather in Changchun has caused some trees to be broken by snowfall and freezing rain, and even driving doors have to be smashed with hammers. The weather is particularly cold this year and may be affected by the La Niña phenomenon.

There is a saying that is often popular recently: You wear mink in the north, and I reveal my waist in the south. It can be described how abnormal the weather is this year in 2020. We in the south are still wearing short-sleeves, while our friends in the north have been experiencing continuous snowstorms.

When we were studying geography in middle school, we often heard the teacher say two terms, one is "El Niño phenomenon" and the other is "La Niña phenomenon". Both of them are descriptions of weather abnormalities. El Niña generally causes the temperature to rise, while La Niña is the opposite of El Niño, which is abnormally cold. La Niña generally appears in the year following El Niño. The La Niña phenomenon refers to a cold water phenomenon in which sea surface temperature anomalies in the central and eastern equatorial Pacific Ocean appear to be cold in a large area, and the intensity and duration reach certain conditions. 2019 is an "El Niño" year. Judging from the current temperature in the north, this year should be a "La Niña" year.

We know from the news that the United States will be severely affected, but the recent severe cold and heavy rains in Changchun, Heilongjiang and other places in northern my country can also be seen that La Niña is already affecting our country, but It is difficult to judge whether it will continue to be so cold. After all, the general trend of global warming will not change. It is possible that the current cold is only short-lived, and it is also possible that this winter will counterattack and become a warm winter. After all, judging from the current phenomenon, although it is raining heavily in Changchun, the south is still dry and hot, and the weather has been extremely hot and muggy recently, even reaching 32 degrees in some areas.

Whether it is a warm winter or a cold winter this year, we must be prepared for these unusual weather conditions. Coupled with the impact of the current COVID-19 epidemic, we must protect ourselves, keep warm from the cold, and replenish water to prevent colds. wait.