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They can be as little as 100 m (330 ft) from top to bottom to as thick as 8,000 m (26,000 ft). Cirrus cloud thickness is usually somewhere between those two extremes, with an average thickness of 1,500 m (4,900 ft). [23] The jet stream, a high-level wind band, can stretch cirrus clouds long enough to cross continents. [24]
The list of cloud types groups all genera as high (cirro-, cirrus), middle (alto-), multi-level (nimbo-, cumulo-, cumulus), and low (strato-, stratus). These groupings are determined by the altitude level or levels in the troposphere at which each of the various cloud types is normally found.
Cirrus fibratus, also called Cirrus filosus, [2] is a type of cirrus cloud. The name cirrus fibratus is derived from Latin , meaning "fibrous". [ 3 ] These clouds are similar to cirrus uncinus , commonly known as "mares' tails," yet different in that fibratus clouds do not have tufts or hooks at the end. [ 4 ]
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Cloud with limited vertical height with a length much bigger than their height: Cu Lenticularis: len: Lens or almond shaped clouds that are stationary in the sky: Sc, Ac, Cc Mediocris: med: Clouds of moderate height that are around equal height and length, growing upwards: Cu Nebulosus: neb: Featureless sheet of cloud with no structure: St, Cs ...
Cirrus spissatus or also called Cirrus densus and Cirrus nothus [1] clouds are the highest of the main cloud genera, and may sometimes even occur in the lower stratosphere. The characteristic features of cirrus clouds are fine threads or wisps of ice crystals , generally white, but appearing grey when dense and seen against the light.
Type II bands are long streaks that often occur in groups arranged roughly parallel to each other. They are usually more widely spaced than the bands or elements seen with cirrocumulus clouds. [136] Type III billows are arrangements of closely spaced, roughly parallel short streaks that mostly resemble cirrus. [137]
Nacreous clouds, also known as "mother-of-pearl" clouds, are high-altitude clouds that form in the stratosphere, typically at altitudes of 15 to 25 kilometers, and are most commonly observed in ...