Polar snow
Polar snow (also diamond snow , diamond dust ; English diamond dust ) is a form of precipitation in which ice needles are formed by resublimation directly from the water vapor in the air layers close to the ground and fall to the ground. The sky can be completely cloudless. Since the air close to the ground contains innumerable small ice needles under polar snow conditions, halos with many variants can be created, provided a suitable light source (sun, moon, but also artificial light sources) is available. Polar snow usually occurs during severe frost with double-digit minus degrees.
See also
Web links
Commons : Polar Snow - Collection of images, videos and audio files
Individual evidence
- ↑ http://www.wolkenatlas.de/wolken/descr.htm
- ↑ Archived copy ( Memento of the original from July 10, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
