cirrostratus

A principal high-level cloud type appearing as a whitish veil, usually fibrous but sometimes smooth, which may totally cover the sky and which often produces halo phenomena, either partially or completely. Sometimes a banded aspect may appear, but the intervals between the bands are filled with thinner cloud veil. The edge of the veil of cirrostratus may be straight and clean-cut, but more often it is irregular and fringed with cirrus. Some of the ice crystals that comprise the cloud are large enough to fall and thereby produce a fibrous aspect. Cirrostratus occasionally may be so thin and transparent as to render it almost indiscernible, especially through haze or at night. At such times, the existence of a halo may be the only revealing feature, such as producing a halo around the moon. Abbreviated: Cs.

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Look at other dictionaries:

  • Cirrostratus — Abréviation METAR Cs Symbole Classification Famille A (Étage supérieur) …   Wikipédia en Français

  • cirrostratus — [ sirostratys ] n. m. • 1830; de cirrus et stratus ♦ Nuage élevé, de la famille des cirrus, en voile blanchâtre presque translucide. ● cirrostratus nom masculin Nuage de la famille des cirrus formant un voile plus ou moins blanchâtre, qui dessine …   Encyclopédie Universelle

  • Cirrostratus — Cirrostrātus (lat.), federige Schichtwolke, zarte, ca. 9 km hohe Wolkenschleier …   Kleines Konversations-Lexikon

  • Cirrostratus —   [lateinisch] der, /...ti, Wolken.   …   Universal-Lexikon

  • cirrostratus — ► NOUN ▪ cloud forming a thin, uniform semi translucent layer at high altitude …   English terms dictionary

  • cirrostratus — [sir΄ō strāt′əs, sir΄ōstrat′əs] n. the type of thin, whitish cloud found at high altitudes and consisting of ice crystals: such clouds often produce halo phenomena: see CLOUD …   English World dictionary

  • Cirrostratus — Wolken: Klassifikation Gattungen Cirrus Ci Cirrocumulus Cc Cirrostratus Cs Altocumulus Ac Altostratus As Stratocumulus Sc Stratus St Cumulus Cu Nimbostratus …   Deutsch Wikipedia

  • cirrostratus — These clouds form typically as a thin whitish sheet covering a major portion of the sky. They may be very thin or form a definite sheet. They are responsible for forming halos around the sun and the moon. Cirrostratus clouds contain ice crystals… …   Aviation dictionary

  • cirrostratus — UK [ˌsɪrəʊˈstrɑːtəs] / US [ˌsɪroʊˈstreɪtəs] noun [countable/uncountable] Word forms cirrostratus : singular cirrostratus plural cirrostrati UK [ˌsɪrəʊˈstrɑːtaɪ] / US [ˌsɪroʊˈstreɪtaɪ] science a thin layer of cloud found very high in the sky …   English dictionary

  • cirrostratus — cirrostrative, adj. /sir oh stray teuhs, strat euhs/, n., pl. cirrostratus. a cloud of a class characterized by a composition of ice crystals and often by the production of halo phenomena and appearing as a whitish and usually somewhat fibrous… …   Universalium

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