sublimo

Sublimo is a rare and relatively short-lived meteorological phenomenon characterized by the sudden and simultaneous sublimation of light snow or ice particles into a vivid display of reddish-orange color. This phenomenon typically occurs during periods of clear skies and high pressure, when the air is cold and dry.

The name "sublimo" was coined by Japanese scientists in the early 20th century, who first cataloged and studied this phenomenon. It is believed to be caused by the interaction between sunlight, ice crystals, and atmospheric particles, resulting in the absorption and scattering of shorter wavelengths of light, such as blue and violet. This process leaves longer wavelengths, like red and orange, to dominate the visual spectrum.

Sublimo appears as a vibrant, smoky-like effect in the sky, often taking on a tube-like or V-shaped formation. It is typically seen in high-altitude regions, such as mountainous areas, where the atmospheric conditions are conducive to the formation of ice crystals and the subsequent sublimation process. While sublimo is a distinctive and localized weather phenomenon, it is essential to note that it should not be mistaken for other, more common atmospheric effects, like dust or wildfire-generated air masses.

Reports of sublimo sightings have been documented worldwide, but it remains a relatively rare occurrence, primarily due to the specific atmospheric conditions required for its manifestation. Early evening or late afternoon hours are considered prime time for sublimo, when sunlight passes through a steady, thin layer of atmospheric particles, frequently producing the necessary conditions for the display of this unique meteorological spectacle.