Blizzard in the north, the temperature in many places in the south exceeds 3 1 degree. Is the south completely unaffected by the cold air in the north?

My hometown is in Henan, so I'm a northerner. Because Henan is a place with four distinct seasons, the hottest summer can reach 40 degrees, and the coldest winter can reach MINUS 10 degrees. There have also been scenes of heavy snow and flowers blooming, so Henan is a place with four distinct seasons. However, my school is in the southernmost province of China.

Some northern friends were surprised when they saw some photos and videos online, because it was snowing heavily in their hometown, and they were already wrapped in thick cotton-padded jackets. For some northern friends, they even have short sleeves, and even some girls go out with umbrellas, which makes them feel very surprised. The temperature difference between the north and the south of China is really that big, but it really is. I have lived in Hainan for four years, and every time I fly back to Hainan during the winter vacation, I will send a message, which says that I want to cross, from winter to summer. In fact, this sentence means that the temperature in Hainan at that time was actually equivalent to the temperature in our northern summer. When you arrive, you will immediately take off your cotton-padded jacket and wear a shirt at most, sometimes wearing short sleeves directly. There are many southern provinces in China, such as Hainan, Guangdong, Guangxi, Fujian and so on. They are very hot all year round, especially in Hainan and Guangdong, where the temperature is relatively high in winter. So it is not surprising to see them wearing short sleeves in winter and even reaching 365,438+0 degrees at noon at a certain time. This is a common scene. You can buy one if you don't believe me.

But isn't the weather in the south affected by the cold air in the north at all? The answer is wrong. Although the winter weather in the south is generally high, it is also affected by the cold air in the north, which has a great impact. For a simple example, Hainan is not very cold in winter. If you go running in the playground at night, you should take off your clothes and just wear short sleeves. If a cold current passes from north to south, there will be a phased cooling. When this cold current comes to Hainan, Hainan will cool down rapidly, so once this cold current passes, the temperature will rise rapidly, so the temperature in Hainan is completely affected by the cold air in the north. But this effect is limited to the periodic cold current. In most cases, the weather in the north has nothing to do with the weather in the south. Even if the temperature in the north has reached -30 degrees and there is heavy snow all over the sky, the weather in the south is still unaffected. The only ones affected are cold current or typhoon, because they are mobile and can sweep cold air across China, so in this case, the man will also cool down in stages. In other cases, the temperature in the south is basically unaffected by the north.