They form through glaciation, and under near-saturation conditions, broad bands of these structures can be produced from contrails.
The so-called "infrared" variety of these objects are usually filamentary structures most easily seen at high Galactic latitudes that were discovered by the IRAS mission. These structures can appear as finger-like fall streaks that are similar to virga, and they are commonly responsible for moonrings and sundogs. The term "uncinus" is used to describe these structures when they display a hooked filament pattern known as "mares' tails," which resemble commas. They form through glaciation, and under near-saturation conditions, broad bands of these structures can be produced from contrails. Supercooled water droplets that freeze into ice crystals compose, for 10 points, what wispy structures, the most common high-level clouds?
The so-called "infrared" variety of these objects are usually filamentary structures most easily seen at high Galactic latitudes that were discovered by the IRAS mission.
{cirrus} clouds