Traditional Culture Encyclopedia - The 24 Solar Terms - How is the time of winter solstice determined?
How is the time of winter solstice determined?
Although the days from winter solstice in the northern hemisphere are short, the temperature from winter solstice is not the lowest; It won't be very cold before the winter solstice, because there is still accumulated heat on the surface, and the real winter is after the winter solstice; Because of the great differences in climate in different parts of China, the climatic characteristics in the sense of astronomy and meteorology are obviously late for most parts of China.
Meteorological change
From winter to the future, although the solar altitude angle gradually increases, it is a slow recovery process, and the heat lost every day is still greater than the heat received, showing a situation of "making ends meet". On the day of "March 9 and April 9", the accumulated heat is the least, the temperature is the lowest, and the weather is getting colder and colder.
China has a vast territory, and the climate and landforms vary greatly from place to place. Although the days from winter solstice are short, the temperature from winter solstice is not the lowest; It won't be very cold before the winter solstice, because there is still "accumulated heat" on the surface, and the real cold winter is after the winter solstice. Due to the great differences in climate in different parts of China, the climatic characteristics of this day are obviously late for most parts of China.
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