Beginning of winter is the first solar term in a year. Brief introduction of beginning of winter.

1, beginning of winter, is the 19th of the 24 solar terms. Bucket handle points to the northwest, the longitude of the sun reaches 225, and it intersects with Gregorian calendar165438+1October 7-8 every year. Beginning of winter is a seasonal solar term, which means that it has entered winter since then.

2, beginning of winter season, the sun has reached 225 degrees, the northern hemisphere get less and less solar radiation, but at this time because the surface heat still has some energy storage in the second half of the year, so the early winter is generally not too cold. In winter, the northeast wind and the north wind are the main winds.

3. In the southern region, from beginning of winter to Xiaoxue, sunny, warm and comfortable "Xiaoyangchun" weather often appears. There is a folk saying "Xiaoyangchun in October", which means "it is warm in August and warm in September, and there is Xiaoyangchun in October". Generally, it is not very cold in early winter in the south, but with the passage of time, cold air frequently goes south and the temperature gradually drops. In northern South China during beginning of winter, even if the cold wind sweeps away, the temperature will rise rapidly. When there is no wind on a sunny day, it is often said that "October is sunny and there is no wind to warm".

4. In the area near the north of Huaihe River in Qinling Mountains, cold air frequently appears, and cooling has become the normal state in this season. In the northeast and northwest regions, it is already a scene of heavy snow, especially in the northeast Heilongjiang region, which is extremely cold and has entered the winter before the arrival of beginning of winter. The red and yellow scene in northwest autumn has not completely faded, but the snow has already fallen.