What are the reasons for the formation of solar halo in Beijing
On November 9, a solar halo appeared in Changping District, Beijing. A circular color halo surrounded the sun, which was particularly beautiful. Folk proverbs say that 'the sun halo is rainy on the third watch, the moon halo is windy at noon', and the occurrence of the Sun Halo means that there may be rain at night.
How is the halo landscape formed
Finally, reveal how the halo landscape is formed. It is reported that solar halo, also known as round rainbow, is an atmospheric optical phenomenon, which is formed by the refraction or reflection of ice crystals when sunlight passes through cirrus clouds. When the light enters the ice crystal in the cirrus cloud, it is refracted twice and dispersed into different colors in different directions.
When there are cirrus clouds, countless ice crystals will float in the sky. The ice crystals in the same circle around the sun can refract the light of the same color into people's eyes to form a halo of internal infrared purple. (actually, there is no) when there are cirrus clouds composed of ice crystals in the sky, one or more color halos of internal infrared purple centered on the sun often appear around the sun, Sometimes there are many colored or white light spots and arcs. These halos, light spots and arcs are collectively referred to as ice halos.