Ngrohtësia

Ngrohtësia, also known as the "snow devil" or "snowspout," is a rare and fascinating meteorological phenomenon that occurs in cold regions. It is similar to a dust devil but is composed of snow instead of dust or debris. Ngrohtësia typically form in areas with fresh snow cover and light winds. The process begins when the sun heats the snow surface, causing the air above it to warm and rise rapidly. This creates a low-pressure area at the surface, which draws in more cold air from the surrounding environment. The combination of the rising warm air and the incoming cold air creates a spinning column of snow, which can reach heights of several meters.

Ngrohtësia are usually short-lived, lasting only a few minutes, and are often accompanied by a loud roaring sound due to the friction between the spinning snow and the ground. They are most commonly observed in polar regions and high-altitude snowfields. While ngrohtësia are visually striking, they pose no significant threat to humans or infrastructure. However, they can be dangerous for hikers and skiers who may be caught off guard by their sudden appearance.

The study of ngrohtësia is relatively new, and much about their formation and behavior remains unknown. Researchers continue to investigate these phenomena to better understand their role in the Earth's climate and weather patterns. Despite their rarity, ngrohtësia serve as a reminder of the complex and dynamic nature of our planet's atmosphere.