How does cold air affect the weather? What are the benefits of cold air?

How does cold air affect the weather? What are the benefits of cold air? Cold air always keeps coming in winter, and this kind of cold air won't come. This is really not our decision. Its birthplace is the cold Arctic Ocean and Siberia, and it can be described as a cold air manufacturing factory. Even if the journey is long, even if it reaches our country, it will still lead to significant cooling. Let's look at the formation of cold air. What is the principle of cold air forming cold air? First of all, let's take a look at the cold air and the birthplace of the North Sea and Siberia. These two places are very small, so the temperature is relatively low all year round. Especially in winter, the temperature here will be extremely low, and the lowest extreme temperature can reach 70 degrees. Because the temperature is too low, the local atmospheric density is relatively high. With the increase of atmospheric density, the air will contract and the air pressure will increase, thus forming a strong cold and high pressure air mass. When the high pressure mass reaches a certain level, it will enter the low latitude and come to China. Of course, the cold air formed in the Arctic Ocean will reach Siberia first, where the momentum will weaken, but because the air is still very cold, the cold and high-pressure party will reorganize and then invade China.

It can be seen that as long as the above climate is cold enough, cold air can be continuously generated. In addition, the light time in our country is insufficient, and the overall climate is very cold, so the cold air will be more serious for our country. The so-called high pressure refers to the place where the central pressure is higher than the surrounding pressure. Cold high pressure is caused by thermal cooling of the surface. When the temperature near the ground is relatively low, there is no heat energy to push the cold air up, so it is dense and airy, but because the surrounding air is warmer, it is naturally lighter and the airflow is very cold. The air blows in all directions. Therefore, the range of cold air is diffuse and relatively wide.

Cold air generally invades China in Xinjiang, Inner Mongolia and other places, and then spreads in China. So we see Leng Bo in northern Inner Mongolia and Xinjiang every winter. Sometimes the temperature in these areas has been falling and snowing, and most parts of our country have not ushered in the real winter. The influence of cold air is relatively wide, and the moving speed is generally around tens of kilometers per hour. If it is thicker, the moving speed is slower.

According to the above principle, polarity should be formed in cold air all year round, because the temperature here is relatively low. Since there will always be cold air sources, why don't we see cold air coming to our country? In fact, there is cold air in summer, just because our country is more than enough, and the cold air entering our country will be seriously weakened, so what we can feel is almost minimal. In addition, the temperature is relatively high in summer, even if the temperature of weak cold air drops, we won't feel great.