When is the severe cold solar term in 2023?

In 2023, 65438+1October 20th 16: 29: 20 will usher in China's 24 solar terms. The great cold is the coldest period in a year, and it is also in the stage of counting nine. Counting nine is a folk method to calculate the flowering dates of cold weather and warm spring, that is, counting nine times every nine days from the date of winter to Sunday, and so on. From 99 days to 9981 days, the weather will gradually warm up, so it will be cold for about one and a half months after the great cold.

Climatic characteristics of severe cold solar terms 1, large-scale rain and snow weather and strong wind cooling.

During the severe cold and solar terms, the atmospheric circulation is relatively stable and hungry, and the circulation adjustment period is about 20 days. When this circulation is adjusted, there will often be a wide range of rain and snow weather and strong winds to cool down. When the west of 80 degrees east longitude is a long wave ridge and East Asia is a coastal trough, under the influence of the northwest wind and the continuously supplemented cold air, China will have a sustained low temperature. In some parts of China, severe cold is not as good as slight cold, but in some years and a few coastal areas, the annual minimum temperature will still appear in the severe cold solar terms.

It rains the least in a year.

In the severe cold season, the average temperature in most parts of southern China is 6℃ to 8℃, which is nearly 65438 0℃ higher than slight cold. The phrase "slight cold, severe cold and cold into a ball" shows that the severe cold solar term is also a cold period of the year. Slight cold and severe cold are the periods with the least rainfall in a year, and all the year round is a severe cold solar term. The rainfall in most parts of South China only increased slightly compared with the previous period, with 5 ~10mm in most parts of South China and only1~ 5mm in the mountainous areas of Northwest Plateau.

3. Frequent cold waves

During the great cold, the cold wave moves southward very frequently, which is quite cold in most parts of China in a year. Railway, post and telecommunications, petroleum, shipping and other departments should pay special attention to take measures as soon as possible to prevent severe weather such as strong winds and heavy snow. Agriculture should strengthen the cold and antifreeze of livestock and wintering crops.