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cirrus
Definição1
Detached clouds in the form of white, delicate filaments or white or mostly white patches or narrow bands. These clouds have a fibrous (hair-like) appearance, or a silky sheen, or both.
Fonte1
WORLD METEOROLOGICAL ORGANIZATION. International Meteorological vocabulary. 2nd ed. Geneva, 1992. (WMO, n.182). Disponível em: < https://library.wmo.int/index.php?lvl=notice_display&id=220#.XeauGOhKiUk >. Acesso em: 08 jun. 2021.
Fonte2
KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
Fonte3
ESTADOS UNIDOS. Federal Aviation Administration. Advisory circular: aviation weather. [Washington, DC]: FAA, 23 aug. 2016. (AC n. 00-6B).
Nota Adicional1
They are high clouds, which occur at above 20,000 ft (6 km) height. Cirrus clouds are composed of thin crystals or needles of ice, not droplets of water
Contexto
When near the horizon, cirrostratus may be impossible to distinguish from cirrus.
Subárea
Aeronautical Meteorology
Related Term
cirrostratus
stratus
Français
cirrus