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"Xiao Han" is here! Cold air "in time" came. This time, it is the "overlord" level

release date: Source: Beijing client

today (5th), Xiaohan arrived. Xiaohan is the 23rd of the twenty-four solar terms and the fifth in winter. The cold air is cold for a long time. The slight cold means that the weather is cold but not to the extreme. Like the great cold, slight heat, great heat and summer treatment, it is a solar term indicating the change of temperature

the solar term of mild cold is characterized by cold, but it is not yet extreme cold. After the winter solstice, and confirm that the tightening space is appropriate. The cold air of the gray cast iron tightening sample frequently goes south, and the temperature continues to decrease, and the temperature drops to the lowest during the light and severe cold of the year. As a folk saying goes, "the cold season is two, three, nine, and the sky is cold and the earth is cold to shiver", which shows the cold degree of the solar term of the cold season. In the light cold season, the direct point of the sun is still in the southern hemisphere, and the heat in the northern hemisphere is still in the state of loss. The heat absorbed during the day is still less than the heat released at night to avoid damaging the tip of the oil needle. Therefore, the temperature in the northern hemisphere continues to decrease, and the main characteristics are:

according to China's long-term meteorological records, the mild cold solar term is colder than the severe cold solar term in the north, and there is a saying "mild cold is better than severe cold" in the north; However, for most parts of the south, the annual minimum temperature will still appear in the cold solar term. According to climate data statistics, the coldest time of year in most of northern China is the middle of January (10th to 20th) of the Gregorian calendar, and the annual mild cold solar term starts from January 5 to 7th, with a solar term of about 15 days, and the middle of which is just within the mild cold solar term. Therefore, for most of the northern regions, the mild cold is indeed colder than the severe cold. But for most parts of the south, it is the coldest during the cold solar term; The cold solar term generally starts from January 20 (late January), which is the coldest time of the year in the south

Xiaohan has three seasons: first, Yanbei Township, which is "Yanbei township" on the day of Xiaohan. This "township" is a trend, and beifeiyan has sensed Yang, which is the guide; Second, magpies begin to nest. Five days after the slight cold, "magpies begin to nest". Magpies have begun to nest and are ready to reproduce; Pheasants wait for three days, and then "pheasants" for five days. Pheasants are pheasants, Yang birds, pheasants, and courtship calls. At this time, the early awakened pheasant dove began to mate, and early spring was approaching

"little cold" arrived, and a cold air also came "at the right time". This cold air is "overlord" level again. It is expected that the north wind will gradually increase after midnight today. On the 6th, the gale in the capital will cool down, with a north wind of four or five levels and a gust of about seven levels. The wind chill effect is significant. Affected by this, the maximum temperature in the daytime fell to -8 ℃ and the minimum temperature at night fell to -15 ℃ on the 6th. By the 7th, the wind chill effect was still significant, there were still three or four north winds, with the highest temperature of -6 ℃ and the lowest temperature of -14 ℃

on the 8th, the temperature in Beijing was still low, and it rose slightly from the 9th. It is windy and cold, and there is no oil dripping or intermittent dripping when the tonnage is high. When traveling at home, you must pay attention to wind, cold and freezing prevention

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