What is the meaning of slight cold

Slight cold is one yearThe 24 solar termsThe 23rd solar term.At this point, the weather was cold, cold has not yet reached the pole, so called a slight cold.

Slight cold, the sun to longitude 285 degrees, when the Gregorian calendar January 6 or so (January 5 ~ 7). After a slight cold, climate in our country begin to enter the coldest time of the year.As the saying goes, air conditioning JiJiu and cold.

Why call slight cold

Slight cold and severe cold, slight heat and great heat, and the limit of heat, is according to the temperature changes in temperature changes in solar terms.Departure pulled seventy-two hou the said in "cold is still small in early...A half big yi ", that is to say, in the Yellow River basin, is severe cold than the cold at that time.And due to the slight cold is still in the last few days, "ErJiu" slight cold in a few days later, just enter the "san-jiu", and slight cold winter just correspond to the slight heat of summer, so called a slight cold.

The characteristics of slight cold

Is the day is cold, is not yet big cold.Winter "san-jiu" is basically at the throttle, thus there are "the slight cold severe cold".This is because in a festive winter solstice, when the earth's surface get least sunlight, heat, but also the deep soil heat added, so also is not the most cold all the year round.Wait until after the winter solstice, is the "san-jiu" before and after the deep heat of the soil is depleted, although sunlight, heat increases slightly, still trying to make ends meet, thus appeared the lowest temperature throughout the year.

Slight cold when the temperature

Slight cold when the average temperature in Beijing generally fluctuates in a 5 ℃, extreme minimum temperature below 15 ℃ -;Northeast north, when the average temperature around - 30 ℃, extreme minimum temperature is low, below 5 ℃, the highest temperature in the afternoon, on average, but also - 20 ℃.45 ° N to the north of heilongjiang, Inner Mongolia and xinjiang region and the northern Tibet plateau, the average temperature in - 20 ℃, the average temperature in west of hetao area near 40 ° N in - 10 ℃.To the qinling mountains, huai river line average is about at 0 ℃, south of the line has no seasonal frozen soil, DongZuoWu also no obvious wintering period.At this time of the average temperature in the south of the Yangtze river in 5 ℃, while the fields are still full of vitality, but also have a cold air southward, cause certain harm.