On August 15th, Yun Zheyue, on the 15th day of the first month, it snows and lights up.

"Reflects the echo relationship between holiday weather.

Mid-Autumn Festival is a traditional folk festival in China. As the saying goes, the Mid-Autumn Festival is especially bright. On the Mid-Autumn Festival night, the bright moon is in the sky.

Silver light shines on the earth. The climate here is pleasant,

In the quiet night,

People get together,

Watch the bright moon,

Tell the children about the Goddess Chang'e flying to the moon,

The story of osmanthus tree and jade rabbit.

If the dark clouds cover the moon on this day,

The sky is gloomy,

Disappointing!

But it means another traditional festival in China, Lantern Festival,

When every household is decorated with lanterns and colorful decorations,

Snowflakes are flying and exciting.

The echo relationship between the weather of these two traditional festivals has long been concerned by people. Over time,

In many places,

If the night of August 15th is full of dark clouds,

Snowflakes often appear on the fifteenth day of the first month. So people concluded: "Yun Zheyue on August 15th,

On the fifteenth day of the first month, the snow hits the lights,

Be widely handed down.

of course，

The rhythmic activity of the atmosphere is a very complicated problem.

Its causes, conditions, manifestations and many other aspects have not been clearly understood.

This regularity can't be matched in every place and year.

now

Many meteorologists are deeply studying the rhythmic activities of the atmosphere and its causes.

The research results in this field,

For the development of long-term weather forecasting,

There is no doubt that it is of great benefit.

On the surface, "Yun Zheyue" and "Snow Lights" are the echo phenomena of clouds and snow, but in essence they are the echo relationship of two cold air activities.

That is to say,

If there is cold air activity around the Mid-Autumn Festival,

Resulting in the phenomenon of "Yun Zheyue". So,

Around the Lantern Festival,

There will be another cold air invasion,

Form a situation of "snow hits the lights". Therefore, "Yun Zheyue on August 15th,

On the fifteenth day of the first month, the snow hits the lights,

It is a reflection of the rhythmic activity of the cold air invading China for about 5 months. According to this proverb,

The rhythmic relationship of cold air activity for about 5 months was studied.

Use it for long-term weather forecast,

Good results have been achieved; The weather on other days also has this rhythmic relationship.

It's just not noticed by people in general.

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The echo relationship between holiday weather is a manifestation of atmospheric rhythmic activities.

Why is there a relationship between two holiday weather days apart from 150 days?

It turns out that,

This is a manifestation of atmospheric rhythmic activity. The earth's atmosphere,

Like a big band,

Wind, clouds, rain, snow, thunder, electricity, fog, frost,

It's like this band plays a rich music. Many research work shows that,

Under the combined action of various physical factors,

This large-scale movement played by the atmosphere,

It also shows a certain sense of rhythm.

That is, some kind of weather process,

It's obvious at some point,

Under certain conditions,

After a period of time, it became obvious again.

Or in other forms due to different seasons,

Just like the beat in music,

On the surface, there is no direct evolutionary relationship between them.

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