Why does the sky change color?

The wonders in the atmosphere are not accidental, but reflect the state of atmospheric movement, so the change of wonders in the sky is often a sign of atmospheric change. The working people in our country have rich experience in judging weather changes by using these phenomena. For example, there is a proverb: "Don't go out at dawn, but go to Wan Li Road at dusk", which means using sunset to predict the future weather. According to the formation principle of chardonnay, a bright red morning glow appears in the morning, indicating that there are many water droplets in the atmosphere and clouds have invaded the area from the west, thus indicating that the weather will turn to rain; A fiery red or golden sunset glow appears, indicating that there is no cloud in the west, and the sunlight can penetrate to cause the sunset glow, that is, the weather in the upper reaches of the area has cleared up. In this way, the weather in this area will clear up after the clouds that originally enveloped this area move eastward.

Another example is: "East Rainbow Sunrise, West Rainbow Rain". This proverb also infers whether the future weather will be sunny or rainy according to the direction in which the rainbow appears. According to the formation principle of rainbow, the direction in which rainbow appears is the direction in which water droplets exist, and the rainbow is in the east, indicating that there are bigger water droplets in our eastern atmosphere; The rainbow is in the west, which means that there are big water drops in the atmosphere in the west of us. Most of China is located in the westerly belt, and the weather system generally moves from west to east. The cloud and rain area in the east will move eastward more and more in the future, while the cloud and rain area in the west will easily affect the local area. This experience reveals the nature of this weather evolution.

Another example is: "the sun is dizzy in the middle of the night, the rain is dizzy in the middle of the night, and the moon is dizzy in the wind at noon." This proverb also reveals the nature of future weather changes according to the halo phenomenon. As we know, the halo is caused by the refraction and reflection of the light from the sun or the moon when it passes through the cirrostratus composed of ice crystals in the sky. Cirrostratus usually appears at the front of low pressure, followed by high-level clouds and nimbostratus that cause rainfall. If the low-pressure windy area passes through the local area, there will be strong winds. Of course, this proverb does not necessarily mean that the solar halo means rain, and the lunar halo means windy, but only that the wind and rain are coming.

In a word, everything in the atmosphere is the result of atmospheric movement. So we can predict the weather scientifically through some special scenes.