What is the solar term after the first frost, and what is the solar term after the first frost?

1, after the first frost is beginning of winter.

2. beginning of winter, one of the 24 solar terms, is also one of the traditional festivals of the Han nationality, as the end of the calendar and the beginning of the moon; The time point is between Gregorian calendar165438+1October 7-8 every year, that is, the sun is located at 225 degrees of the yellow meridian. At this time, the sun is located at declination-16 19, and the noon sun height in Beijing is only 33 47. After beginning of winter, the sunshine time will continue to shorten, and the height of the sun will continue to decrease at noon. During the period of beginning of winter, the Han people regarded winter solstice as beginning of winter. In order to spend the severe winter, it is necessary to supplement the dietary customs.

3, Li, also, shows that winter has begun. Winter means the end, which means that the crops should be harvested after harvest. China regards beginning of winter as the beginning of winter.

4. Since the beginning of the beginning of winter solar term, the westerly jet in South Asia has been fully established. At this time, the fluctuation of the south branch of the high-altitude westerly wind and its eastward movement have great influence on the precipitation weather in Jianghuai area. When the zonal circulation in Asia and the fluctuation of the south branch of the westerly wind are strong, there will be a wide range of rainy weather. In addition, the zonal circulation will end, the meridional circulation will be established, and there will be a cold wave and significant cooling.