Describe the optical phenomena in the atmosphere that you have witnessed?

Optical phenomena are not uncommon in the Earth’s atmosphere. An experienced meteorologist can judge the processes taking place in the atmosphere and even predict the weather for the coming days by this or that phenomenon. I have witnessed an atmospheric halo phenomenon. A halo is a glowing halo around the moon on a clear frosty night. This phenomenon can be observed when moonlight in the upper troposphere passes through ice crystals. The rays are refracted and give such an unusual glow. The presence of ice crystals in the upper atmosphere indicates the movement of a warm atmospheric front. Warm air is light, it moves slowly, it penetrates into the upper layers of the troposphere like a wedge. The water vapor contained in the warm air condenses as it moves upward and turns into ice crystals. According to popular beliefs, a halo in the sky portends a change in weather, cloudiness and precipitation.