The weather is getting cooler and the climate characteristics in autumn are becoming more and more obvious. In a few days, it will be the 14th of the 24 solar terms, and it is also the second solar term in autumn - the summer solar term. Will it not be reheated after the arrival of the solar term? What does the arrival of the solar term of summer vacation represent? What are the weather characteristics of the solar term for relieving summer heat? Let's take a look at this article.
Summer is a solar term that reflects the change of temperature. " 'Chu Shu' means hiding and ending, and 'Chu Shu' means that the hot summer is over. "The collection of the seventy-two seasons of the lunar order" said: "the place is also stopped, and the summer heat is stopped here." It means that the heat is about to pass, the summer heat will end on this day, and the temperature in most parts of China will gradually drop. It is different from the solar terms of slight heat, great heat, slight cold and great cold. It represents the transition of temperature from hot to cold.
In China, the summer is divided into three periods: 'first, the eagle is a sacrifice to birds; Second, wait for heaven and earth to begin to disappear; Three times he naideng. " In this solar term, eagles began to hunt a large number of birds; Everything in heaven and earth began to wither; ' "Wo" of "Wo naideng" refers to the general name of millet, millet, rice and sorghum crops. "Deng" means maturity.
After the summer vacation, except for South China and southwest China, the rainy season is coming to an end in most parts of China, the precipitation is gradually reduced, and the rice is ripe and harvested. Especially in North China, Northeast China and Northwest China, we must pay close attention to water storage and moisture conservation; To prevent drought during autumn planting and delay the sowing date of winter crops.
"Collection and solution of the seventy-two seasons of the moon & middot; relieving summer heat"
Summer, mid July.
Place, stop. The summer heat stopped here.
Eagles are sacrificial birds, eagles and righteous birds. Autumn belongs to gold. The five acts are righteous and the golden Qi is subdued. The eagle feels its Qi and begins to catch and attack all birds. However, it must be sacrificed first. The people of Judah eat and sacrifice first. It means not to strike a bird with a fetus.
It is said that heaven and earth begin to eliminate autumn, and Yin begins to eliminate autumn.
He naideng. Wo Zhe. The general name of Gu Liangao straw. In addition, rice, sorghum and sorghum belong to grain. Cheng re Yue Deng.
The weather characteristics of the solar term for relieving summer heat
Temperature drop
It is not enough to describe the solar term of relieving summer heat only when the temperature begins to decline. Lower temperatures are only one of these phenomena. The reason behind this phenomenon is that the direct point of the Sun continues to move southward and the solar radiation weakens; Second, the subtropical high retreated southward by leaps and bounds, and the Mongolian cold high began to be eager to try, punching and kicking.
fresh autumn weather
The cold high pressure began to affect China. Under its control, the sinking and dry cold air first announced the end of the rainy season in Northeast, North and Northwest China, and took the lead in starting the best weather of the year - autumn. During the summer vacation, only the northeast and northwest regions really enter autumn. However, whenever the cold air affects our country, if the air is dry, it often brings windy weather. If there is warm moisture flow in the atmosphere, it often forms a decent autumn rain. After every storm, especially after rain, people will feel obvious cooling. Therefore, it is said that 'an autumn rain (wind) and a cold'. In the Jianghuai region in the south of the north, there may be a large precipitation process. The temperature drops obviously, the temperature difference between day and night increases, and the sun is in the sky after the rain. People often do not adapt to the changes of cold and heat at the turn of summer and autumn. If they are not careful, they are easy to cause respiratory tract, gastroenteritis, cold and other diseases.
Autumn tiger
Although the subtropical high, which dominates in summer, retreats southward, it will not easily give up its dominance and retreat to the sea of the Western Pacific. In the southern region it controls, people who have just felt a trace of cool autumn often feel the hot weather again at the end of the summer. This is a real autumn tiger. For areas that have just come out of the three volt and encounter severe summer drought, if they continue to be controlled by the subtropical high, it is often easy to form continuous drought in summer and autumn, which greatly advances the fire prevention period in autumn. We need to be vigilant. It should be said that the middle and lower reaches of the Yangtze River often usher in a crisp autumn and sunny spring after the end of the autumn tiger weather, but it will be after October. During this period, the general trend of rainstorm all over the country is weakened.
Thunderstorm activity
South China, Southwest China and West China.
Thunderstorm activity is not as active as that in summer, but there are still more thunderstorms in South China, Southwest China and West China. In South China, because the warm and humid air flow at low latitude is still relatively active, there are more thunderstorms than in other places; In southwest and West China, due to the edge of subtropical high and the effect of mountains, thunderstorms are also more active. In September, most of China began to enter a less rainy period, while there was more autumn rain in Western China. It is a special weather phenomenon in autumn in Western China. In addition to the Weishui and Hanshui River basins, autumn rain in Western China also includes autumn rain in Sichuan, most of Guizhou, Eastern Yunnan, Western Hunan and Western Hubei. Because of the early autumn rain, it can appear in late August. The earliest occurrence date can sometimes start in late August and end in late November at the latest. But the main rainfall period occurs in September and October. " The main feature of autumn rain in Western China is that it has many rainy days, while another feature is that it is dominated by continuous drizzle. Therefore, although there are many rainy days, the rainfall is not very large, generally less than that in summer, and the intensity is also weak.