The snowfall in some areas of Inner Mongolia has exceeded the highest since 1951. How did this happen?

The formation of heavy snowstorms requires at least a strong confrontation between cold and warm air currents, so which two air currents are responsible for the heavy snowstorms in Inner Mongolia?

Of course, the strong cold air is brought by this cold wave, which is a cold high pressure from the northwest of China. We knew this one week before the arrival of the blizzard. The National Meteorological Center has long predicted that China will suffer the strongest cold wave since autumn, with Xinjiang and Inner Mongolia bearing the brunt.

However, this cold air passing through Xinjiang has formed a strengthened cold vortex in the process of moving eastward. The cold vortex is a climatic phenomenon in which the cold air column keeps rotating counterclockwise, and in the process of cold vortex, a stream of cold air will be thrown out.

That is to say, over Tongliao area in Inner Mongolia, the cold air from the northwest formed a cut-off cold vortex here, and the moving speed of the cold vortex was slow, which easily caused long-term rain, snow, strong wind and cooling weather.

At the same time, a surface cyclone was generated near the Yellow Sea and Bohai Sea, which transported a large amount of warm and humid air currents from the Yellow Sea and the Sea of Japan to the northeast and southeast Inner Mongolia, where cold and warm air strongly converged, resulting in this extremely heavy snowstorm.

Therefore, the direct cause of the extremely heavy snowstorm in many places in Inner Mongolia is the fierce intersection of the cold vortex formed by the cold air in the northwest and the warm and humid airflow brought by the surface cyclone in the Yellow Sea and Bohai Sea. Extreme Climate under Global Warming

Earlier, we introduced the direct cause of this heavy snowstorm, so where is its root cause? How did this cold air come from?

China's winter is mainly affected by cold high pressure from the Arctic, Siberia, Russia and Mongolia, and this nationwide cold wave is the cold air from the Arctic.

A strong cold high pressure will form in the Arctic every winter. However, under the influence of the earth's rotation, it usually turns in the same place in the polar region and will not go south easily, because a strong polar cyclone will form over the Arctic sea ice.

However, if the scale of Arctic sea ice decreases, the polar cyclone spinning in place will be less stable, and the cold air will go south with the global atmospheric circulation, bringing cold waves to countries and regions close to the North Pole.

For example, China experienced four major cold waves in the winter of 22, and people obviously felt abnormal climate, which was actually related to the reduction of the scale of Arctic sea ice. Last year, the scale of polar sea ice was the second smallest on record.

what is the relationship between the reduction of arctic sea ice scale and it? The answer is global warming! That is to say, global warming has led to the reduction of Arctic sea ice, and the polar cyclone is unstable, which makes it easier for cold air to go south. This cold wave in China is caused by this.

Some people may wonder, since it is global warming, why does it feel colder and colder in winter? The reason is very simple. If you lengthen the time, you will understand that from 1961 to 219, the average temperature in winter in China has undoubtedly increased, with an increase of about 3℃.

that is to say, the winter decades ago was much colder than now, but we were only impressed by the winter in recent years. Under the general trend of global warming, this short-term temperature fluctuation is normal.

In a word, the strongest cold wave in China since the autumn of 221 is rooted in global warming, and the severe snowstorm in Inner Mongolia is also closely related to global warming.