What do you need to pay attention to in heavy snow solar terms?

Pay attention to cold protection in heavy snow and solar terms.

The meaning of solar terms and heavy snow is different from that of weather. In fact, the snow in solar terms is often not as big as that in light snow, and the solar terms with the largest amount of snow in the whole year are not in light snow and heavy snow. Take the middle and lower reaches of the Yellow River as an example. Among the 24 solar terms, the solar term with the largest annual snowfall is neither light snow nor heavy snow, nor slight cold (because the temperature was low at that time and there was less water vapor in the atmosphere), but in the spring rain solar term, and the snow solar term is not the largest.

The reason is similar to that Yu Xiaoxue is heavier than heavy snow, that is, the coldest period of the year has passed in late February of the Gregorian calendar. In early spring, the warm air in the south began to be active and the water vapor began to be rich. At this time, the cold air force in the north is still strong and strong, and the warm air flow rises strongly and persistently on the back of the dense cold air flow, so there may be heavy snow, and there is no necessary connection between solar terms and heavy snow.

Historical origin

Every year around 65438+February 7 in Gregorian calendar, when the sun reaches 255 degrees of the Yellow Meridian, it is a "heavy snow" solar term. The twenty-four solar terms are the product of agricultural civilization, and the main climatic factors affecting agricultural production are precipitation, temperature and light. Like the light snow solar term, the heavy snow solar term is a solar term reflecting the changing trend of temperature and precipitation, and it is also a reflection of agricultural culture on festivals.

Heavy snow is a solar term reflecting climate characteristics. Climate factors include precipitation, temperature and light, among which precipitation is an important factor. In meteorology, the water vapor condensation of rain, snow and hail falling from the sky to the ground is called "precipitation". The arrival of heavy snow in solar terms means that the weather is getting colder and colder and precipitation is increasing.