What is the scientific basis for "clouds cover the moon on August 15th, and snow lights up lights on the 15th day of the first lunar month"?

The scientific basis of "Clouds cover the moon on August 15th, and snow lights on the 15th day of the first lunar month" is as follows:

"Clouds cover the moon on August 15th, and snow lights on the 15th day of the first lunar month." It is a farmer's proverb spread in vast areas of China. It is the weather forecast experience summed up by the Chinese working people in their long-term production practice. It reflects the echo between festival weather. This means that on the Mid-Autumn Festival on the 15th day of the eighth month of the lunar calendar that year, if the sky is covered by clouds (cloudy or raining) and the full moon of the Mid-Autumn Festival cannot be seen, it will be cloudy or snowy on the 15th day of the first lunar month in the next year.

Why is there a correlation between the weather of two festivals that are 150 days apart? It turns out that this is a manifestation of atmospheric rhythmic activities. The earth's atmosphere is like a large orchestra. Wind, clouds, rain, snow, thunder, lightning, fog, and frost are like the orchestra playing a piece of music with rich tones. Many research works have shown that under the simultaneous action of various physical factors,

This large-scale movement played in the atmosphere also shows a certain "rhythm".

That is to say, a certain weather process is more obvious at a certain moment, and under certain conditions, it becomes obvious again after a period of time.

It may change due to different seasons. It is expressed in other forms, just like the beats in music. On the surface, there is no direct evolutionary relationship between them.

In fact, there is a certain connection. In climatology, this internal connection in the atmosphere is called the rhythmic activity of the atmosphere.

The correlation between the weather of these two traditional festivals has long attracted people's attention. Over time, in many places, if the sky is full of dark clouds on the night of August 15th, snowflakes will often appear on the 15th day of the first lunar month. So people concluded that the weather proverb: "Clouds cover the moon on August 15th, and snow lights up the lights on the 15th day of the first lunar month", which has been widely circulated.

Of course, the rhythmic activity of the atmosphere is a very complex issue, and its causes, conditions, manifestations, and many other aspects are not yet clearly understood.

This regularity It is not possible to match it in every place and every year.

Now, many meteorologists are conducting in-depth research on the rhythmic activities of the atmosphere and its causes.

The research results in this area will undoubtedly play a vital role in the development of long-term weather forecasting. There are great benefits.

"Clouds covering the moon" and "snow illuminating the lights" appear to be echoes of clouds and snow, but are essentially echoes of two cold air activities. In other words, around the Mid-Autumn Festival If there is cold air activity, it will cause the phenomenon of "clouds covering the moon". Then,

around the Lantern Festival, cold air will invade again, forming a "snow lighting up" situation.

Therefore, the proverb "clouds cover the moon on the 15th day of August, and snow lights up the lights on the 15th day of the first lunar month",

It is the cold air that invades China that has rhythmic activity for about 5 months reflection. Based on this proverb, many meteorological stations have studied the rhythmic relationship of cold air activity for about five months.

They have used it for long-term weather forecasting and achieved good results.