Appreciate the "Moon Halo" near the water

On the night of October 18, 2021, around 8 o'clock, a particularly obvious "moon halo" phenomenon appeared in the night sky in Jingzhou.

The "Moon Aperture" lasted for nearly an hour, and a halo of inner infrared and purple lunar halo surrounded the bright moon.

In my eyes, the moon halo in the dark night can be called the most gorgeous "ferris wheel in the night sky".

"What a huge moon halo!"

Eagle-eyed citizens have noticed that the "moon halo" is hanging high tonight.

Apart from being amazed, I couldn’t help but stop and watch.

There are not many opportunities to see the moon halo in Jingzhou.

"People say that the halo of the moon represents happiness!"

I heard a little girl next to me say happily when she called her family.

So, what are solar halo and lunar halo?

How are the solar halo and lunar halo formed?

What are the meanings of solar halo and lunar halo?

How did ancient China wisely explain this phenomenon?

Below, I will give you a brief explanation of the reasons based on the little knowledge I know.

At the same time, share here the pictures captured with your mobile phone that night.

1. The sun is haloing with rain in the middle of the night, the moon is haloing with the wind at noon

An ancient Chinese proverb goes, "The sun is haloing with rain in the middle of the night, and the moon is haloing with the wind at noon."

Meaning:

If there is a solar halo, there will be rain at midnight.

If there is a moon halo, it will be windy at noon the next day.

"The sun halo causes rain at three o'clock, and the moon halo causes wind at noon." From Lou Yuanli's "Tian Jia Five Elements" of the Yuan Dynasty:

"The sun halo causes rain. As the proverb goes, the moon halo dominates the wind. The sun's halo dominates rain, and the moon's halo dominates wind. Wherever there is wind, the wind comes."

In ancient my country, the phenomena of "solar halo" and "lunar halo" were studied very early.

From a modern meteorological perspective, the appearance of a solar halo indicates an increase in water vapor in the atmosphere and the arrival of low pressure.

That is, "solar halo rain at midnight". It is predicted that rain may fall in the next few days.

2. When the moon is haloed, it is windy? When it is moist, it is raining.

"When the moon is haloed, it is windy? When it is moist, it is raining" is an idiom. The explanation is:

When the moon halo appears, it will be windy;

When the foundation stone is wet, it will rain.

Metaphor can be used to predict what will happen from certain signs.

“When the moon is dim, it is windy, and when it is moist, it is raining.” This is from Song Su Xun’s “Discrimination of Adultery”:

If you can see the faintness, you will know the writing, if the moon is dim and the wind is blowing, if the ground is moist and it is raining, everyone will know it."

Everyone knows it," said Baiyi layman of the Qing Dynasty in "Hu Tian Lu":

Dryness. Moisture is the natural gas of heaven and earth. The moon is dim and windy, and the base is moist and rainy. People use this to measure the past and present, which is consistent with ancient and modern times.

Chang Yu's "On the Civil Affairs of Laiyang": "The moon is dim and the wind is known, and the base is moist and the rain is known. Those who are afraid of rising up in Laiyang will be looking for disasters in disguise."

3. The formation of "solar halo"

The main reason for the formation of "solar halo" is closely related to the angle of solar radiation and clouds.

When cirrostratus clouds appear above the ground, since the temperature in the cloud is usually about minus 30 degrees,

the small water droplets in the clouds condense into larger particles through the condensation process. shaped ice crystals.

At this time, if the sun shines at the right angle, after the sunlight passes through the clouds and is refracted,

it will decompose into yellow, red, green, blue, purple and other colors to form our The colorful "halo" in the eyes.

Meteorological experts said:

Solar halo is an atmospheric optical phenomenon, which is formed when sunlight passes through cirrostratus clouds and is refracted or reflected by ice crystals.

When light hits the ice crystals in cirrostratus clouds, it is refracted twice and dispersed into various colors of light in different directions.

When there are cirrostratus clouds, there will be countless ice crystals floating in the sky. The ice crystals in the same circle around the sun will refract the same color of light into the human eye, forming Inner red and purple halo.

When there are cirrostratus clouds composed of ice crystals in the sky, one or more colorful rings with the sun as the center,

inner infrared and purple, often appear around the sun, and sometimes there are Many colored and white light points or light arcs appear.

These halos, light points and light arcs are collectively called halos.

4. The formation of "lunar halo"

"lunar halo" is an atmospheric optical phenomenon in nature

The beautiful scenery of "lunar halo" is actually similar to the formation principle of rainbow .

When the moonlight shines on some high clouds composed of ice crystals in the sky, the light is reflected and refracted by the clouds, and colorful apertures around the moon that can be seen by the human eye will appear.

5. The color of the "lunar halo"

Sometimes, the lunar halo is as beautiful as a rainbow, which is called "colorful lunar halo".

This is because the light from the sun or moon passes through high and thin clouds and shines on the ice crystals inside, forming a colorful aperture.

The order of halo colors is inner infrared and purple.

When the light is strong, two or three colors can be seen.

Sometimes, the moon halo looks very elegant. When the moonlight is weak, the moon halo tends to appear pale white.

6. The size of the "lunar halo"

The size of the moon halo is different every time.

Some apertures are very close to the moon, while others are like "ferris wheels".

The size of the lunar halo depends on the shape of the ice crystals.

If the ice crystal falls sideways, the sunlight enters from one side of the ice crystal and exits from the other side, and the diameter of the halo seen is 22°;

If the ice crystal falls vertically, the sun When light enters from the side and exits from the bottom, a large halo with a diameter of 46° will appear.

7. When the sun is dim, it rains? When the moon is dim, it is wind.

“When the sun is dim, it rains; when the moon is dim, it is wind.” This is a proverb.

The moon halo is also called a wind circle.

Meteorological experts said that when a halo appears in the sky, it is usually a precursor to an invasion of thunderstorms.

When solar and lunar halo phenomena occur, it usually indicates that the weather will change in a short period of time, and wind and rain will come.

There is a certain scientific reason why the sun causes rain at midnight and the moon causes wind at noon.

However, it does not mean that there will be wind and rain when there are solar halo and lunar halo.

When a lunar halo appears in the sky, the ground is about six to seven hundred kilometers away from the cirrostratus clouds.

Based on a moving speed of forty to fifty kilometers per hour, the wind and rain will generally not arrive until more than ten hours after the halo appears.

This is the principle of "the sun haloes with rain at midnight, the moon hazes with wind at noon".

Whether it will be windy or rainy after the lunar halo appears depends on how cirrostratus clouds and mid-low clouds develop.

Whether it is a "halo" that lasts for several days or a short-lived "halo", it all depends on the development speed of mid-to-low clouds after the "halo".

If the medium and low clouds develop and move in quickly, the precipitation will come quickly;

If the clouds develop slowly and move in, the precipitation will be late;

If it does not move in, there will be no precipitation. precipitation.

This needs to be analyzed based on the development of the cloud.

2021.10.18 The moon halo appeared in the night sky in Jingzhou, and at 5 o'clock in the morning the next day, it started raining heavily.

Proverbs:

Proverbs are concise and concise phrases that are widely circulated among the people.

Many proverbs are production and life experiences summarized by working people through long-term observation.

Proverbs are the crystallization of the wisdom of ancient working people, and they contain certain scientific truths.

1. Moon halo noon wind? Solar halo midnight rain

The wonders of the solar halo and lunar halo are when the sun/moonlight passes through cirrostratus clouds and is refracted and reflected by the ice crystals in the clouds , a phenomenon formed by the human eye, and such cirrostratus clouds containing ice crystals are often formed by a mixture of warm and cold air. As the clouds thicken and develop into altostratus clouds, windy and rainy weather may occur, but this does not happen Rain will definitely occur.

2. Don’t go out for the morning glow? The sunset travels thousands of miles

Because there is less dust in the air in the morning, if the morning glow is brighter than usual, it means that there are many water droplets in the low-altitude clouds in the east, which is very likely There will be rainfall;

In the evening, after a day of sunshine, there is little moisture in the low air. If the sunset is bright in color, it means that the weather in the west is dry.

There is more dust and there will be no Rain occurs.

3. Wear a hat on a rainy mountain? A mountain without rain is waist-deep

If there is rainfall in a mountainous area, when thicker and lower clouds encounter the mountains,

often The top of the cloud will cover the top of the mountain, like a hat on the mountain;

The clouds formed by other reasons are not thick enough, and the top of the cloud cannot submerge the top of the mountain, and the cloud is located on the mountainside.

4. Before and after Qingming? Plant melons and beans

April 5th is the Qingming Festival of the 24 solar terms. At this time, the temperature becomes warmer, with the average daily temperature reaching 12 degrees Celsius.

Rainfall also begins to increase, making it a good time for spring plowing and planting.

Therefore, there are farmers’ proverbs “Before and after Qingming, order melons and plant beans” and “Afforestation is better than Qingming”.

5. It’s good to enjoy the shade under big trees

In hot summer, leaves will undergo transpiration.

The leaves change liquid water into gaseous water, absorbing heat, making the temperature under the big tree lower.

At the same time, transpiration creates a low-pressure area under the tree, which strengthens air convection and creates wind, so it becomes cooler under the tree.

6. It is better to cover than to add fire

The boiling point of water is 100 degrees Celsius.

After the water boils, no matter how high the fire is, the water temperature will not exceed 100 degrees Celsius.

However, after the lid is placed, the water vapor generated by the boiling water accumulates in the pot, causing the pressure inside the pot to increase, and the boiling point of the water to rise, forming liquid water exceeding 100 degrees Celsius. This is the principle of a pressure cooker.

The higher the water temperature, the faster the food will cook.