As the saying goes: "It's foggy in the morning, just wash your pants." Does it make sense?

China has a history of five thousand years, which has also created a long-standing, extensive and profound Chinese culture. Among them, common sayings, as a branch of traditional culture, are summed up by ordinary people through their own life experiences, and some are true to them. The descriptions of folk life also include reflections on life. Because they are easy to understand and catchy, they are widely circulated among the people. There are also profound truths behind many common sayings, such as those said by the older generation of farmers. "It's foggy in the morning, just wash your pants" is a way to judge the weather conditions. Let's learn more about it next. The ground is foggy in the morning, although the clothes are washed

The surface meaning of this sentence is very simple. It means that if you find fog on the ground in the morning, it means that it is a sunny day and you can wash your clothes with confidence. So is there any truth to this saying? The ancients began to judge weather conditions through the occurrence of some natural phenomena a long time ago. There is fog on the ground in the morning. This thin fog is usually called "ground fog". It rises close to the ground and does not completely cover the sky. The appearance of this kind of ground fog indicates that the weather will be sunny for several days in a row. In rural areas, there is a saying of "one fog and three clear days".

This is because the surface temperature is higher at night, the surface emits heat at night, the moisture in the air is atomized, and the water vapor on the surface condenses into small water droplets. The water vapor flows from low to high, but is affected by sinking. The influence of high pressure cannot rise to form clouds, and will stay near the ground to form fog. This means that the local area is affected by the sinking of high pressure, and the sinking airflow cannot cause water vapor to rise into the sky to form clouds, so it will be sunny.

So it makes sense for the older generation to say that if there is heavy fog in the early morning, it must be a sunny day, because the weather will be sunny after the fog dissipates. At this time, the sun's rays are strongest, the humidity is lowest, and the evaporation is the largest. It is most suitable for drying clothes. Moreover, this kind of ground fog weather usually occurs in late summer and early autumn, which happens to be the harvest season for farmers. The autumn air is crisp and the weather is sunny, which is a good time to dry grain. There are no more than three heavy fogs, and after thirty-eight days, there will be no more than one winter.

This sentence is broken down like this: There are no more than three heavy snows; after three, there will be eighteen days; if there are no more than eighteen days, there will be one winter. Dry. So the meaning of the saying is: Under normal circumstances, it will rain or snow no more than three days after a heavy fog; if it does not rain for more than three days, then the weather will be sunny for more than half a month. , but if it doesn’t rain or snow after another eighteen days, it may continue to dry out throughout the winter.

Why is this? First of all, the lingering fog we are talking about here is frontal fog. "Frontal fog" often occurs near the front where cold and warm air meet, and it lasts for a long time. Therefore, frontal fog is a weather warning before the cold air comes. Frontal fog After the front fog passes, the temperature will drop, and rainfall or snowfall is likely to occur.

We have already understood that when the heavy fog has not dissipated, it is because the small water droplets in the air condense together. When it reaches a certain mass, when its mass reaches a weight heavier than the buoyancy of the air, It will fall as rain or snow. But if the foggy weather lasts for a very long time, the fog is very likely to dissipate in other forms. In this way, there will be no precipitation, the air will be drier, and the probability of precipitation will be even smaller. In addition, strong winds are likely to blow in winter, so it is normal for a winter to be very dry.

The editor has something to say: As the saying goes, it was created by people in ancient times discovering the laws of nature through their observations of life and work. It was used to guide farmers' production and life at that time, and it has been verified by time. , and in the process of long-term circulation, new knowledge is constantly added and new verifications are constantly accepted, thereby being continuously improved and becoming a tool to guide people's production and life.

The essence of proverbs is actually thinking about the various relationships between man and nature. Although it may be somewhat different from the current weather, it still has a certain scientific value, so when we face these proverbs , we should select the essence and discard the dross, and combine it with real life to feel the charm of proverbs, only in this way can the value of proverbs be reflected. Therefore, when there is heavy fog, you can observe the weather conditions in the next few days to see if it conforms to the common saying.