What is the date of slight cold?

The slight cold is between 65438+1October 5-7 every year.

Slight cold is the 23rd solar term in 24 solar terms and the 5th solar term in winter. Fighting fingers; The meridian of the sun is 285; Gregorian calendar 65438+1October 5-7. The slight cold marks the official start of the season and winter. Cold air is cold for a long time, and slight cold means that the weather is cold but not extreme.

It is the same as great cold, slight summer heat, great summer heat and summer heat, and it is a solar term indicating temperature change. The weather characteristics of slight cold are: it gets cold, but it is not cold yet. As the saying goes, "cold is in March 9th", and because the March 9th in the middle of winter is basically within this solar term, there is a saying that "slight cold is better than severe cold". ?

Meteorological changes of slight cold;

The weather of slight cold is characterized by getting colder and colder, but it is not cold yet. In the slight cold season, the direct point of the sun is still in the southern hemisphere, and the heat in the northern hemisphere is still in a state of loss. The heat absorbed during the day is still less than the heat released at night, so the temperature in the northern hemisphere continues to decrease.

The climate in south and north of China is quite different. According to China's long-term meteorological records, the slight cold solar terms in the northern region are colder than the severe cold solar terms; But for most parts of the south, the big cold solar terms are colder than the small ones. ? [ 1 1]? [ 13]?

During the slight cold solar term, the East Asian trough developed the strongest and most stable, the Mongolian cold high and Aleutian low also reached the strongest and most stable, and the ridge scale of the westerly trough reached the maximum, which matched 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.