"The moonlight seems to be very round, and the golden breeze of the jade dew is in the hot weather." At 5:35 on August 23, at 5:35 on the 16th day of the lunar calendar, after the night of the full moon, the hot weather will arrive as scheduled.
By Zhong Kui, All Media Reporter, Guangzhou Daily
Does the summer heat really "end here"?
Chushu is the fourteenth solar term in the twenty-four solar terms.
When entering the summer solar term, the bucket handle points to the southwest, and the sun reaches 150 degrees of the yellow longitude.
The "three heats" in the twenty-four solar terms (small heat, big heat, and end heat) have one thing in common, that is, they are all solar terms that reflect the change of heat stroke in a year.
A small heat is a small heat, a big heat is a big heat, and a hot heat means that the heat will stop.
"Moon Order 72 Hou Ji Ji" said: "In the heat, in the middle of July. The place, the end, the heat will stop here."
When you reach a place of heat, does the heat really "stop here"?
Not necessarily, there are three reasons.
Autumn is already in some areas this year
First, the laws of climate change revealed by the twenty-four solar terms are determined based on the climate of the Yellow River Basin as the main “parameter”.
However, my country has a vast territory, variable terrain, and a large span from north to south and east to west.
In the same season, the temperature varies in different regions.
For some parts of our country, the seasonal climate characteristics described in the twenty-four solar terms are only a reference.
Since August 1 this year, most parts of our country have not yet experienced the long summer, but some areas in the northeast and northwest have already entered autumn, and the time of autumn is earlier than usual.
For example, Harbin starts autumn on August 15th, and autumn starts on August 9 this year; Changchun starts autumn on August 18th, and autumn starts on August 10th this year; Hohhot starts autumn on August 9th, and August 1st this year. The day is beginning to fall.
In meteorology, the standard for autumn is that when the average temperature of a place is less than 22°C for 5 consecutive days, the first date less than 22°C is regarded as the starting day of autumn.
It depends on whether Chu Shu has been "out of"
Secondly, whether the summer heat subsides and stops every year, in addition to the date of the summer, it also depends on whether the summer has been "out of the sun."
The so-called "being out" means going out of the dog days.
The duration of the dog days each year varies from 40 days to 30 days. Therefore, the time of out is different, sometimes before the summer heat, sometimes after the summer heat.
As the saying goes, "The cold is in three to nine, and the heat is in the doldrums".
He also said, "If you don't have heat, set the fire to cook again."
If you encounter a year when the summer heat has come, but it has not yet come out, it means that the heat has not yet come out, and the weather is usually quite hot, just like "steaming up and down cooking" during small and big heat.
For example, there were 40 days in the dog days last year, and the peak time was August 25, and the summer season was August 22.
Before the summer heat, this situation means that the summer heat has not yet come out, so last summer was particularly long.
Especially in the southern region, until November 22, the light snow solar term is still sultry and hot, and the air conditioner must be turned on at night.
This year's sunburst is also 40 days, but the sunburst time is August 20th, earlier than Chushu.
At the end of the summer, it means that the hottest dog days of the year have passed, and the summer heat is gradually dissipating. This year, autumn in most parts of our country may be earlier than last year.
It depends on whether "Autumn Tiger" will come
Third, even if the dog days are over and the heat is here, according to previous years' experience, "autumn tigers" may appear.
And with the trend of global warming, the weather in some areas not only did not get cooler after the fall, but there were also unbearable high temperature weather. This kind of weather change cannot be prevented.
"Autumn tigers" mostly occur from late August to September each year. This period is usually about half a month after the summer heat, and sometimes lasts for a month or two.
"Qing Jialu" by Gu Lu of the Qing Dynasty said: "After the summer, the weather is still mellow, and it will be cold after about eighteen days." What he called "the weather is still mellow" after the summer is the "autumn tiger."
But "Autumn Tiger" does not necessarily appear every year.
Dietary principles: "Replenish it with salt and relieve it with sweetness", eat more beans
Will "Autumn Tiger" show off after the summer heat this year?
In addition to paying attention to the weather forecast, folk sayings can also be used for reference.
If it rains on the first day of autumn, even if it is drizzle, it is "shunqiu", and the possibility of "autumn tiger" is unlikely.
If it doesn't rain that day, it is very likely that "autumn tigers" will appear.
If it rained in Guangzhou on August 7 this year, some people think that there will be no "autumn tigers" in Guangzhou this year.
In addition, this year is the year of Xin Chou, and the laws of climate change in August and September of the year of Xin Chou can also refer to the "Huang Di Nei Jing".
The "Huangdi Nei Jing" believes that the "Four Qis" of the Xin Chou Year (July 22, 2021 to September 23, 2021), the first 30 days were hot, sweltering, and damp and hot. In the next 30 days, although it was daytime. Steaming heat and fighting each other", the steaming moisture and heat are kinked with each other, but there is also a "cold wind at dawn", cool breeze gusts in the morning and evening.
According to this statement, the weather in late August and September this year was hot during the day, cool in the morning and evening, and heavy in humidity.
That is, the temperature difference between day and night is large, and there are signs of early autumn.
The "Huangdi Neijing" also believes that during this period, people have a lot of hot skin, sudden heavy bleeding, malaria, abdominal swelling, swelling, etc.
In terms of diet, it is advisable to "replenish it with salt and relieve it with sweetness" and eat more beans.