How is the flame cloud produced and why is it red?

When the sun is at a special angle to your horizontal position, the light refracts through the clouds at a certain angle when it passes through the atmosphere, and is dispersed by small water droplets in the clouds, turning into seven colors of light, but only red light and yellow light have the best penetration, so you will see red and yellow reflected fiery clouds.

Extended data:

The flaming cloud refers to the red cloud at sunrise or sunset, which is one of the phenomena of atmospheric change.

Flame clouds belong to low clouds. When the sun just comes out, or when the sun is about to set in the evening, the clouds on the horizon are often red, like fire, so they are called fire clouds.

We already know that sunlight is a mixture of red, orange, yellow, green, cyan, blue and purple. The wavelengths of these colors of light are different. The red light wave is the longest, followed by the orange light wave, and the purple light wave is the shortest.

Because there are countless dust and water droplets floating in the molecules of the air and in the air, they can disperse all kinds of rays of the sun, which is called scattering. Because in colored sunlight, the shorter the wavelength of some light, such as purple and blue light, it is easy to be scattered; The longer the wavelength, such as red and orange light, the less likely it is to scatter.

In the morning or evening, sunlight is refracted, so red with longer wavelength is most easily refracted, so in the morning or evening, clouds will be easily reflected into red, so you can see red flaming clouds and clouds during these two periods.

When there are no clouds in the sky, there are few raindrops hanging in the air; At noon, the air layer is very thin, and almost all the red, orange, yellow and green lights in the sun pass through. There is less blue at this time, and the sky and clouds are blue at this time. ?

When the sun rises in the east in the morning, or when the sun sets in the evening, the sun shines on the ground, and the air layer it passes through is thicker than when the sun is at the top at noon. Clouds can be dyed beautiful red by light.

In fact, flame clouds are not particularly common, so there is a folk proverb called "you can't go out early, but you can travel thousands of miles late", which reminds everyone to be prepared for protection according to the appearance of flame clouds. Arrange the travel time reasonably.

References:

Baidu encyclopedia-huoshaoyun