A new round of cold wave is coming, and many places are ushering in a cliff-like cooling, do you feel it? So let's have a chance today. The blizzard and freezing rain on the eve of the Spring Festival, many people should have experienced it. In particular, Hubei, Hunan, Henan and other places in China have been seriously affected by heavy snowfall and freezing rain. Due to the sudden blizzard and freezing rain, many people did not react. Many highways in Hubei have been paralyzed and trains have been suspended, leaving people returning home from the Spring Festival travel trapped on the road for dozens of hours. Now, a new round of blizzard and freezing rain is coming again, and the central and eastern regions have been hit by blizzard and freezing rain again, especially in Hubei, Hunan, Henan and Guizhou, which have become the focus of this rain and snow weather. However, this time is different, in order to meet this blizzard and freezing rain, many places across the country are fully prepared.
With the arrival of a new round of cold wave, the central and eastern regions of China have once again been hit by heavy snowfall and freezing rain, which will bring great inconvenience to people's production and daily travel. In recent years, with the serious destruction of the earth, global climate change has become more and more serious, especially the intensification of global warming, and various extreme weather phenomena have become more frequent. According to the World Meteorological Organization, rising global temperatures are causing extreme weather due to melting polar glaciers and imbalances in atmospheric circulation and water cycles. China has a vast territory and complex and diverse terrain. Under the combined influence of the eastward movement of the upper-air trough, the mid- and low-level shear line and the southward movement of cold air on the ground, the central and eastern parts of China were hit by rain and snow, and some areas even experienced heavy snowfall and freezing rain.
In recent years, China's climate has undergone abnormal changes, and another important reason is the influence of La Niña. La Niña refers to the phenomenon of abnormally cold sea surface temperature in the central and eastern equatorial Pacific Ocean, which has a huge impact on the global climate system. Under the influence of La Niña, the abnormal drop in sea surface temperature in the Pacific Ocean will cause climate warming, which will lead to abnormal changes in atmospheric circulation and precipitation distribution, and trigger frequent occurrence of extreme weather events. When La Niña occurs, it will affect the global atmospheric circulation, resulting in abnormal climate in some regions, and extreme weather such as cold waves, heavy rains, and floods are prone to occur in China. In recent years, La Niña has occurred frequently, resulting in a relative increase in extreme weather in China.
A new round of cold wave is coming, why will the central and eastern parts of China be hit by blizzard and freezing rain again? The central and eastern parts of China were hit by heavy snowfall and freezing rain again, mainly due to the combined impact of various factors such as the southward movement of cold waves, the impact of large-scale cold and warm airflows, and the influence of topography. The terrain in the central and eastern parts of China is complex, with many mountains and plateaus, which have a certain impact on the movement of airflow, which may lead to drastic changes in temperature and unstable precipitation patterns. When a cold wave hits, strong cold air usually moves south to affect the central and eastern parts of China, resulting in a sharp drop in temperature, forming rain, snow or freezing rain. A wide range of cold air collides with warm and humid airflows, resulting in active weather dynamics, which are prone to extreme precipitation such as heavy snowfall or freezing rain.
The main reason for the formation of the new round of cold wave is mainly due to the southward movement of the Arctic vortex, La Niña phenomenon and the convergence of cold and warm air from the north and south. When the Arctic vortex moves southward, the cold Arctic air will invade southward, causing the temperature in the central and eastern parts of China to plummet. Under the influence of La Niña, the cold air in the Arctic region is more likely to spread southward, thus affecting the central and eastern parts of China. When cold air meets abundant water vapor, extreme weather such as blizzard and freezing rain is formed.
In order to cope with the blizzard and freezing rain brought by the new round of cold wave, China's provinces can be said to have shown their own magic and taken different measures. On the one hand, we should strengthen meteorological monitoring and early warning work, and release early warning information in advance, so that the public can take preventive measures in advance. On the other hand, strengthen emergency response, and make material reserves and disaster relief preparations. All localities will strengthen the snow removal and de-icing work in key areas such as roads, bridges, and airports, configure mechanical equipment such as snow melting agent spreaders, snow plows, and graders, and place snow melting agents in advance in some special road sections such as ice-prone road sections, key bridges, and long longitudinal slopes to ensure smooth and safe traffic. In order to cope with the heavy snow and freezing rain brought by the cold wave, Wuhan, Hubei Province even saw a large-scale cutting down of large tree branches. What do you think about the new cold spell?