Purple lights
Description
The phenomenon is well studied and fairly widespread, although rarely intense. It is the play of the sunlight scattered by the atmosphere and repeatedly reflected in the snow crystals of mist.
There are so-called "purple dawn" and "purple sunsets".
Pink sunset, purple sunset, or the purple glow is an optical phenomenon that occurs at dawn and representing the game of sunlight scattered by the atmosphere and repeatedly reflected in the snow crystals.
Purple dawn is more rare than the purple sunset, the duration of which is 20 to 30 minutes. It occurs when the sun is still below the horizon below 4 degrees, the air is frosty, filled with ice crystals, and around snow. The intensity of the purple glow increases with the transparency of the air and increasing altitude of observation. It becomes pronounced due to the low temperature and adequate moisture.
Translated by «Yandex.Translator»
