sunny optical halo effect in the early morning on the background of snow hummocks. the concept of studying the environment

atmosphere atmospheric background circle cold concept early effect environment fjord focus forecast halo halos horizontally hummocks ice illusion illusions light luminous meteorology mock morning observation optical parhelia parhelic parhelion phantom phenomenon physical polar polarization polarized position prism rainbow reflection refraction ring science selective sky snow soft solar studying sun sundog sunlight sunny sunset sunshine troposphere vertically visual weather winter