With the arrival of the slight cold solar term, why do people say that "slight cold is better than severe cold"

When the sun reaches 285 degrees on the fifth or sixth day of the lunar calendar (65438+ 10 month), the solar term is called "slight cold". At this time, the sun is still hovering near the tropic of Capricorn, and the solar heat received by the northern hemisphere is still extremely weak. China's ancestors realized through long-term experience that it was the coldest day of the year. Meteorological data show that slight cold is the lowest temperature solar term, and the temperature of great cold is lower than slight cold for only a few years. Most people mistakenly believe that the sun in the Tropic of Capricorn is the coldest on the solstice in winter. Although the surface gets the least sunshine and heat in winter solstice, the heat in deep soil supplements this, so it is not the coldest time all year round.

After the winter solstice, the heat in the deep soil was also consumed before and after the "March 9", that is, during the slight cold solar term. Although the sunshine and heat increased slightly, it still made ends meet, so the lowest temperature in the whole year appeared. There is a folk saying that "a slight cold is not as good as a severe cold".

Slight cold, like severe cold, mild summer heat, severe summer heat and intense summer heat, are all solar terms indicating temperature changes. Interestingly, slight cold is the 23rd solar term among the 24 solar terms in the China lunar calendar. Together with the last solar term, great cold means severe winter season. Different from the winter solstice solar terms in the last days of a solar year, the solar terms in the lunar year end with slight cold and severe cold, which shows that it is convenient for China to arrange farming in the lunar calendar.

Meteorologists explained that among the slight cold solar terms, the East Asian trough is the strongest and most stable, the Mongolian cold high and Aleutian low are also the strongest and most stable, and the ridge scale of the westerly trough is the largest, which matches the strongest westerly intensity. The cooling process of cold air is frequent in the slight cold season, but few of them reach the cold wave standard. The coldest area in Chinese mainland is the north of Heilongjiang, and the lowest temperature is around -40℃. It's freezing and dripping into ice, and it's a world of ice sculptures and jade carvings. The average temperature in Beijing is generally around minus 5℃, and the extreme minimum temperature is below minus 15℃.

Bian Xiao still reminds everyone to wear more clothes and go out less.