Nephology is the branch of meteorology that studies cloud formations. Knowing what clouds are like and their relationship to rainfall production and fluid dynamics is critical to understanding how planets interact with their temperatures.
Asperatus over Schiehallion, Perthshire, Scotland. © Ken Prior
In Greek, nephos means cloud. Hence the name Nephology. A cloud is made of very, very small water crystals and particles that fly at high altitudes.
Because they are dense, they manage to scatter light and that is why they look white. The more charged it is, the darker it is. And as they wander because of temperature changes and winds, they take on whimsical shapes.
Recently, in 2009, a new formation was discovered. After observations by Nephologists, they began to notice that there was a slightly peculiar formation that they were acquiring and that was not categorized. It is a relatively new category but, obviously, it has always existed.
This formation was named Undulatus Asperatus or Asperitas, rough ripples (although it sounds like a harry potter spell). They look like an undulating and rather elongated layer. They are not rainy, which means that when they form they do not produce rain.
What can't be denied is that they look amazing. I can see why there is a whole society of cloud lovers, the Cloud appreciation society.
Translated with www.DeepL.com/Translator (free version)