What does beginning of winter stand for in the twelve solar terms?

Beginning of winter, one of the 24 solar terms, is also the end and the beginning of the full moon in the official calendar. 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 height of the sun at noon 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.

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

Beginning of winter solar terms and high-altitude westerly jet have been fully established in South Asia. 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.