The lowest temperature in Northeast and other places will fall below freezing point. Besides Northeast, which other places will be affected by cold air?
In addition to the Northeastern region, North China and the Huanghuai region will also be affected by the cold air this time, and the weather and temperature in the future will also be colder than in previous years.
How is cold air generated?
Cold air is air located in low temperature areas. Cold air is defined by the difference in temperature in the horizontal direction, and most of it forms in the polar regions or the Siberian continent. Its range is thousands of kilometers long and horizontal, and its thickness will reach several kilometers or even dozens of kilometers. The cold air passes through Later, it will bring rain, snow and other weather, causing the ambient temperature of the area to suddenly drop. The intensity of the cold air invasion will be different each time, sometimes it is strong and sometimes it is weak, and the degree of cooling will also be greater or less. The cold air is like a tide. The surge affects a very wide range, with the largest sharing range reaching more than 2,000 kilometers. Due to the different movement paths of the cold air, the areas affected by the cold air will also be different.
In daily life, cold air, as its name implies, is relatively cold air. Cold air is in a low-temperature zone, and the origin of cold air is basically in relatively cold places such as Siberia or the Arctic Ocean. We all know and have experienced cold air. In autumn and winter, cold air comes from Siberia. Or it comes from the origin of the Arctic Ocean, so there are plains in the north of our country and the cold air can drive straight into our country.
Why are the Arctic Ocean and the cold Siberian region the origin of cold air? Because the cold air originally comes from the Arctic Ocean region and then is strengthened by the cold in the Siberian region. Because these regions have higher longitudes and latitudes, winter nights It is relatively long, the day is very short, and the sunshine time is very short, so the phenomenon of polar night may even occur in the polar regions. The sun basically shines for a very short time, so the heat obtained from the sun in cold areas is very weak. And in the near-surface atmosphere, as the ground continues to cool down and the temperature gets lower and lower, more and more cold air will accumulate, so that the temperature of a group of cold air will be very low. Under the guidance of the Siberian airflow, It will advance from north to south to the northern and eastern regions of our country, as well as most parts of China.