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Jet streaks, bands of faster-moving air in the jet stream, can create arcs of cirrus cloud hundreds of kilometers long. [25] Cirrus cloud formation may be effected by organic aerosols (particles produced by plants) acting as additional nucleation points for ice crystal formation.
Cirrus spissatus (V-3) Cirrus fibratus radiatus (V-8) Cirrus uncinus (V-2) Cirrus fibratus (V-1) High clouds having the traditional "mare's tail" appearance. These clouds are long, fibrous, and curved, with no tufts or curls at the ends. Cirrus uncinus (V-2) Filaments with up-turned hooks or curls. Cirrus spissatus (V-3)
Unlike cirrus and cirrostratus, cirrocumulus clouds contain droplets of supercooled (below freezing point) water. Cirrus clouds form in the atmospheres of Mars, Jupiter, Saturn, Uranus, and Neptune; and on Titan, one of Saturn's larger moons. Some of these extraterrestrial cirrus clouds are made of ammonia or methane, much like water ice in ...
The streaks are often oblong or oval-shaped as the plane ascends or descends through the cloud deck. The result is a quick burst of virga, or precipitation that evaporates before reaching the ground.
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 ...
Jet stream-powered cirrus clouds can grow long enough to stretch across continents, but they remain only a few kilometers deep. When visible light interacts with the ice crystals in cirrus clouds, it produces glories, sundogs, and fire rainbows. Cirrus clouds raise the temperature of the air beneath them by an average of 10 °C (18 °F).
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.
A fallstreak hole (also known as a cavum, [1] hole punch cloud, punch hole cloud, skypunch, cloud canal or cloud hole) is a large gap, usually circular or elliptical, that can appear in cirrocumulus or altocumulus clouds. The holes are caused by supercooled water in the clouds suddenly evaporating or freezing, and may be triggered by passing ...