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A lenticular cloud covers the summit crater of Mayon Volcano, Philippines.. As air travels along the surface of the Earth, obstructions are often encountered, including natural features, such as mountains or hills, and artificial structures, such as buildings and other constructions, which disrupt the flow of air into "eddies", or areas of turbulence.
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A pileus (/ ˈ p aɪ l i ə s /; Latin for 'cap'), also called scarf cloud or cap cloud, is a small, horizontal, lenticular cloud appearing above a cumulus or cumulonimbus cloud. Pileus clouds are often short-lived, appearing for typically only a few minutes, [ 1 ] with the main cloud beneath them rising through convection to absorb them.
Cirrocumulus lenticularis is a type of cirrocumulus cloud. The name cirrocumulus lenticularis is derived from Latin, meaning "like a lentil". [1] Cirrocumulus lenticularis are smooth clouds that have the appearance of a lens or an almond. They usually form at the crests of atmospheric waves, which would otherwise be invisible.
Lens-shaped middle cloud. Includes informal variant altocumulus Kelvin–Helmholtz cloud, lenticular spiral indicative of severe turbulence. Altocumulus volutus (V-27) Elongated, tube shaped, horizontal stratocumuliform cloud. Altocumulus castellanus (V-28) Turreted layer cloud. Altocumulus floccus (V-29) Tufted stratocumuliform clouds with ...
Stratocumulus lenticularis is an uncommon cloud type that belongs to the stratocumulus cloud type, its appearance is that of a flat lens or almond.It forms as a result of atmospheric waves [1] caused by wind passing over obstacles; for example, a mountain or a building.
A cap cloud is a special form of the lenticular cloud with a base low enough that it forms around and covers the peak, capping it. [3] A chinook arch cloud is an extensive wave cloud. It has this special name in North America where it is associated with the Chinook wind. It forms above the mountain range, usually at the beginning of a chinook ...
Rotor clouds have ragged leeward edges and are dangerously turbulent. [4] A foehn wall cloud may exist at the lee side of the mountains, however this is not a reliable indication of the presence of lee waves. A pileus or cap cloud, similar to a lenticular cloud, may form above the mountain or cumulus cloud generating the wave.