Introduction: Xiaoxue is one of the twenty-four solar terms. Each solar term indicates what kind of weather changes will happen next. So what are the weather characteristics of Xiaoxue solar term? What is the meaning of Xiaoxue solar term? Let’s take a look together. Weather characteristics of the light snow solar term
After the arrival of light snow, the temperature begins to continue to drop, and southern my country begins to enter winter, especially in many areas in the middle and lower reaches of the Yangtze River. The temperature will drop significantly.
Many areas in the middle and lower reaches of the Yangtze River have entered winter
During the Beginning of Winter solar term, winter has basically entered in northern my country. During the Light Snow Festival, many areas in the middle and lower reaches of the Yangtze River have entered winter. Although precipitation across the country has gradually fallen to the lowest point of the year with the arrival of winter, the southern part of the Yangtze River still has more rainfall than the northern part of the Yangtze River. Even though there is first snow in this area in mid-to-late December, the rainy weather at this time gives people The feeling is no longer the coolness of late autumn, but the feeling of dampness and coldness. This feeling is much more uncomfortable than that of people in dry and cold northern areas who have heating conditions.
The temperature continues to drop
During the Beginning of Winter solar term, most areas of northwest and northeastern my country have already had snow. The arrival of the Light Snow solar term means that North China will There is snowfall. If the Beginning of Winter solar term marks the beginning of winter in most areas of northern my country, then during the Light Snow solar term, the direct manifestation of cold air is that the temperature in these areas will gradually reach below 0℃. We all know that the precipitation form changes from rain to snow only when the temperature in the clouds and the air layer below the clouds is below 0°C. Therefore, it is an indisputable fact that the temperature is lower during the light snow stage than during the winter stage. What is the meaning of Xiaoxue solar term?
Xiaoxue is the 20th of the twenty-four solar terms. On November 22 or 23, the sun reaches 240° of ecliptic longitude, which is called the Xiaoxue solar term. At this time, the sun is at declination -20°16'. The daylight time in Beijing is only 9 hours and 49 minutes on this day, and the sun's height at noon is only 29°50'.
The ancient book "Qunfang Pu" said: "It snows when the air is cold and the snow is not heavy, but the ground is not cold enough and the snow is not heavy." At this time, everything gradually loses its vitality, and the cold sky and ground turn into severe winter. People in vast areas of China are being "bullied" by the cold northeasterly winds: there will be widespread cooling in the eastern region; there is first snow in the area north of the Yellow River; and the temperature in various parts of the Northeast is already below zero.
Three periods of light snow
The rainbow is hidden and disappears: On the day of light snow, "the rainbow is hidden and disappears". A rainbow can only appear when the yin and yang meet. At this time, the yin is strong and the yang is subdued, and the rain has condensed into snow, so of course the rainbow disappears.
The weather rises and the earth's atmosphere drops: Five days after the light snow, "the weather rises and the earth's atmosphere drops". The heaven and earth are in their proper places, and there is no communication.
Block to become winter: "Winter to become winter" after another five days, winter is hiding, and winter is the end.
Rain and snow are falling, and the cold wave is coming
Light snow is coming, and rain and snow are falling. The Central Meteorological Observatory issued a blue snow warning: It is expected that there will be heavy snow or heavy snow in the south-central part of Inner Mongolia, northern Shanxi, central and northern Hebei and western Hebei, Beijing, and most of Tianjin from 20:00 on the 21st to 20:00 on the 22nd. Local people should stay safe. Unnecessary outdoor activities.
In Huanghuai, Jianghuai, Jianghan, Jiangnan, eastern Southwest and Hainan, there are also light rains.
It is also worth noting that from the 23rd to the 26th, there will be obvious windy and cooling weather in the central and eastern regions of my country from north to south. The lowest temperatures in the eastern part of Northwest China, North China, southern Northeast China, Huanghuai, Jianghuai, and most of South China will successively drop by 6 to 10°C. Please pay attention to keeping warm.