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cloud sheet
Definição1
Particular arrangement of clouds forming a continuous and relatively thin layer of great horizontal extent.
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: 23 fev. 2022.
Fonte2
WORLD METEOROLOGICAL ORGANIZATION. Guide to meteorological instruments and methods of observation. Geneva, 2012. (WMO, n.8).
Contexto
A most difficult case, calling for great care and skill, occurs when a sheet of Altostratus has covered the sky during the evening. Any gradual lowering of such a cloud sheet may be very difficult to detect but, as it descends, the base is rarely quite uniform and small contrasts can often be discerned on all but the darkest nights.
Subárea1
Aeronautical Meteorology
Related Term
cloud bar
Português
lençol de nuvens