The strongest cold wave this winter has hit. Why has it been so cold these two days?
The strongest cold wave this winter has hit. Everyone can feel that the weather has been extremely cold these two days. The main reason is that the cold wave has come, the temperature has dropped sharply, and the temperature difference has been relatively large.
The temperature suddenly dropped, and many people put on cotton-padded jackets directly from their single clothes. They did not want to leave their warm beds in the morning. Their hands felt cold on the road, and their hands were also very cold when playing with mobile phones. On November 27, relevant early warning reports have been issued, mainly due to the incoming cold wave. The yellow warning is expected to start around November 30, affecting most parts of our country from west to east, especially our country. Yes, the temperature will drop in some areas in the north and the Middle East, with a direct drop of 10°C to 16°C. In some areas, the drop can reach 18°C. These are also some areas with relatively large amplitudes.
When such a severe cooling occurs, our country has entered winter overnight, and the reason why this year's strong cold wave formed in winter is also due to overall reasons. First of all, everyone needs to understand the strong high pressure in Siberia. Because of the influence of the Siberian high pressure, the weather will drop off a cliff. In winter, you will find that in land areas, the ability to dissipate and absorb heat is compared with that of the ocean. Low, especially some land from high latitudes are prone to radiative cooling, thus forming a cold core. At this time, the heat will be lost here, also called a cold source, while some areas with relatively high altitudes, especially Central Siberia and The Mongolian Plateau is the most obvious.
In these areas called cold sources, the atmosphere above is relatively strong, so the cooling also has obvious contraction and sinking conditions. There will also be a strong cold hypertension center in the air near the ground. , thus called the Mongolian Siberian High. Because the winter monsoon here is relatively strong, it affects a large area. Finally, cold air will appear and slowly move to some areas, resulting in a cliff-like cooling.