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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]
Noctilucent clouds are known to form near the poles at altitudes similar to or higher than the same type of clouds over Earth. [27] High cirriform Thin scattered wispy cloud resembling cirrus through which the planet's surface can be seen. High stratocumuliform Thin scattered wave-cloud resembling cirrocumulus. Low stratocumuliform
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.
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Sky containing different types of cirrus clouds. Cirrus (cloud classification symbol: Ci) is a genus of high cloud made of ice crystals. Cirrus clouds typically appear delicate and wispy with white strands. In the Earth's atmosphere, cirrus are usually formed when warm, dry air rises, causing water vapor deposition onto mineral dust and metallic
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 ...
Cirrus radiatus is a variety of cirrus cloud. The name cirrus radiatus is derived from Latin , meaning "rayed, striped". [ 1 ] This variety of cirrus clouds occurs in parallel bands that often cover the entire sky and appear to converge at a single point [ 2 ] or two opposite points on the horizon.
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]