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"Whether it's cold or not, just look at the beginning of autumn", a proverb widely sung by the folk shows that people are embellishing the beginning of autumn at the same time, the expectation of the future weather.
However, some people often say that after the beginning of autumn, it is still a scorching heat, and some people call it "autumn tiger" in order to solve the scorching heat that occurs in the beginning of autumn.
So what are the characteristics of local climate development in autumn?
How long after the beginning of autumn is there no autumn worthy of the name, and is this "tiger gas" inevitably related to the temperature in winter, and even predicts what the climate will be like in winter?
Are the proverbs about climate change used by traditional farmers in their daily lives useful?
The beginning of autumn is followed by a scorching heat.
Among the 24 solar terms of the current lunar calendar, the beginning of autumn, as the last solar term of summer, appears around August 7 or August 8, when the earth's movement around the sun reaches the beginning of autumn, so this time represents the end of summer and the arrival of autumn.
However, the weather does not necessarily match the actual situation, and there are still summer weather such as heavy rain in some places, and even in some places it is still in the heat at the beginning of autumn.
Some people may question: "Isn't this the beginning of autumn, why is it still so hot?"
This is actually because most parts of the mainland have a process of rising temperatures, and although the beginning of autumn represents the end of summer, it is often the hottest time of autumn, which means that the temperature at this point in time may not feel like autumn at all.
At the beginning of autumn, the cold air from the north is interspersed, so it is possible that the weather will be windy and rainy and the temperature will plummet after the beginning of autumn, in short, it is not contradictory to the end of the hot summer.
However, this is not very likely, and the beginning of autumn is usually the hottest season, and the duration can be very long.
In ancient times, there was such an agricultural proverb, that is, "eat melons in the beginning of autumn", which means that it may be difficult to see at a glance where the connection between the beginning of autumn and eating watermelons is.
However, if one pays attention to the way the ancients formulated the lunar calendar and the correspondence between the four seasons of the year, it is not difficult to figure out the meaning of this sentence.
According to the autumn equinox is the first solar term of the eighth month of the lunar calendar, so the ancients can harvest watermelons during this time period, so they slowly formed the saying of "eating melons in the beginning of autumn".
However, due to the earth's orbit, from the beginning of autumn to the end of the autumn equinox, there may also be a period of continuous warm weather with a daily average daily temperature of 22 °C.
However, ancient science and technology were not developed, and the method of judging the temperature that is common in distinguishing between "small warm" and "big warm" in the modern climate system is inevitably not rigorous, so in most places, these agricultural proverbs are often not high.
However, some experts believe that the "autumn tiger" generally lasts for 17 days after the beginning of autumn, that is, from August 7th to August 24th, so the meteorological judgment of whether there is such a phenomenon as an "autumn tiger" is speculated based on past conclusions.
Therefore, the length of time for which the autumn tiger lasts cannot be said to be certain in the past, and it is often based on the phenomenon, so modern people need to refer to more factors when referring to these agricultural proverbs.
Whether it's cold or not in winter, let's look at the beginning of autumn first.
Since there is a agricultural proverb of "eating melons at the beginning of autumn", what does the agricultural proverb of "whether it is cold in winter or not, look at the beginning of autumn first" mean?
It is also similar to the meaning of "eating melons at the beginning of autumn", which means that if the weather is very cold at the beginning of autumn, it means that the temperature will not be very low in winter this year.
And if it's a sunny day, then the temperature will be colder in winter.
This is no coincidence, the ancients actually predicted the winter temperature based on the meteorological activity of the beginning of autumn, the solar term.
Some people may say that the beginning of autumn is after the end of summer, which represents a gradual change in temperature, so how can it be as cold as winter?
It is said that the ancients believed that if it rained on the day of the beginning of autumn, the temperature would be warmer in winter.
And if it is windy on this day, it means that the temperature will be lower in winter, and if there is lightning and rain, the winter will be cooler.
It can be summed up like this: "The beginning of autumn lightning rains and winter is not cold".
Some people even conclude that if the temperature is relatively high at noon in the beginning of autumn, then the minimum temperature in winter will not be very low.
Still, even then, there were those who believed that this was not accurate.
Nowadays, with the application of modern meteorological technology, no one has to worry about inaccurate temperature predictions, but even modern people seem to believe in these old proverbs.
Is there a scientific basis for the meteorological changes in the beginning of autumn?
In ancient times, the ancients lived in the same place all their lives, so their daily life patterns did not change much due to moving and other reasons, so many excellent proverbs can be summarized more accurately based on meteorological data.
Modern people's lives are more complicated, not only will they often move because of work, study and other reasons, but also may have travel and other activities, so they will change the living conditions of living in different regions and at different time periods, and it is impossible to summarize such accurate agricultural proverbs like ancient people.
However, this does not mean that the wisdom summed up by the ancients does not have a scientific basis, but rather that the truth hidden in it is considered unreliable by modern people.
With the increasing accuracy of modern weather predictions, most people no longer need to rely on these agricultural proverbs to determine the future weather, so few people will verify whether these agricultural proverbs are really accurate.
Therefore, those who think that these agricultural proverbs are not inaccurate do not conclude that they are not allowed because their way of life is not adapted to them.
Even if these agricultural proverbs are not accurate, their value cannot be completely denied.
Let's take a look at the views of meteorological experts on how to determine the "autumn tiger", they believe that the five-day meteorological index should be judged from the beginning of autumn, rather than "the beginning of autumn lightning rain and winter is not cold".
The so-called "five-day meteorological index" refers to the first five weather phenomena, including the climate change on the day of the beginning of autumn, and the weather conditions on this day have the greatest impact on the winter temperature forecast, so if there is strong wind, moderate rain and other weather on the day of the beginning of autumn is considered by meteorologists to be "climate anomalies", it indicates that the temperature will not be very low in winter.
However, there are not many places like Hyundai where advanced technology can easily and accurately predict the future weather, and most places still need to use these agricultural proverbs to judge the climate.
However, from the perspective of modern people, whether these agricultural proverbs can be used depends on whether they are appropriate, not all places are suitable for the "five-day meteorological index" of the beginning of autumn, and not everyone is accustomed to using agricultural proverbs such as "beginning of autumn and winter".
epilogue
Some agricultural proverbs such as eating watermelon in the beginning of autumn and winter in the beginning of autumn cannot all predict the future weather scientifically, but this does not mean that they are worthless, but they need to be used together according to the actual situation to obtain results closer to reality.
At the same time, there is a lot of wisdom in agricultural proverbs that can complement modern weather forecasting technology, and these wisdom should continue to be actively retained to continue to bring convenience to our lives.