White Rainbow Spotted in Antarctica
Researchers at the Ukrainian Antarctic station 'Akademik Vernadsky' have documented a rare atmospheric phenomenon known as a white, or fog, rainbow. The National Antarctic Scientific Center shared photos of the event on Facebook. Scientists explained that this optical effect is caused by sunlight illuminating a fine mist of extremely tiny water droplets.
Unlike a traditional rainbow, where larger droplets refract white light into a spectrum of colors, the minuscule droplets in fog cause light beams to blend through strong diffraction, resulting in a predominantly white arc. The edges of a white rainbow can sometimes show faint coloration, with the outer edge appearing orange and the lower edge tinged with purple. Such conditions are frequently found in the area surrounding the Ukrainian Antarctic station.
Research by Ukrainian Polar Scientists
The 'Akademik Vernadsky' station is Ukraine's sole Antarctic base, where regular meteorological, geophysical, and biological studies are conducted. Ukrainian polar researchers actively record rare atmospheric events, including:
- Halos
- Auroras
- Specific optical effects
The 31st Ukrainian Antarctic Expedition team arrived at the 'Akademik Vernadsky' station on March 4th. The polar researchers reached Galindez Island late in the evening on March 3rd, Kyiv time, to continue their work in Antarctica's unique environment.
The observation and detailed description of the white rainbow highlights the active scientific work undertaken by Ukrainian researchers. Such documentation not only captures unique phenomena but also contributes to a deeper understanding of weather patterns and climatic changes in extreme environments like Antarctica. The station serves as a crucial platform for international scientific cooperation in polar research, a field of growing global importance.