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visibility
Definição1
The ability, as determined by atmospheric conditions and expressed in units of distance, to see and identify prominent unlighted objects by day, and prominent lighted objects by night. Visibility is reported in statute miles, hundreds of feet, or meters.
Fonte1
CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
Fonte2
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Annex 3 to the Convention on International Civil Aviation. Meteorological Service for International Air Navigation: parts I and II. 18th ed. Montreal, 2013.
Nota Adicional1
Acronym in English: VIS.
Nota Adicional2
Information regarding this term is a result of researches developed by DECEA in cooperation with ANAC.
Contexto
Aeronautical meteorological stations shall make routine observations at fixed intervals. At aerodromes, the routine observations shall be supplemented by special observations whenever specified changes occur in respect of surface wind, visibility, runway visual range, present weather, clouds and/or air temperature.
Subárea
Aeronautical Meteorology
Related Term
cloud and visibility OK
Narrower Term
flight visibility
ground visibility
horizontal visibility
vertical visibility
Français
visibilité