Back to: "F"
FG
- Usado para
- fog
- Definição1
- Cloud consisting of numerous minute water droplets and based at the surface; droplets are small enough to be suspended in the earth’s atmosphere indefinitely.
- Fonte1
- FEDERAL AVIATION ADMINISTRATION. Aircraft flying handbook. Washington, 2004. Disponível em: http://www.faa.gov/library/manuals/aircraft/media/FAA-H-8083-5.pdf. Acesso em: 09 maio 2012.
- Definição2
- The meteorological condition in which the horizontal visibility at the earth’s surface is less than 1000 m because of suspended small droplets or ice crystals in the air. Relative humidity in this case is generally 100% but not less than 95%. Fog is formed by the cooling of the air by contact and mixing or, occasionally, through saturation of the air by increasing water content.
- Fonte2
- KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aeronautical meteorological practice. 10.ed. Montreal, 2015. (Doc. 8896)
- Fonte4
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of runway visual range observing and reporting practices. 3rd. ed. Montreal, 2005. (Doc. 9328 AN/908).
- Nota adicional1
- Fog (FG) is forecast when the visibility is expected to be less than 5/8 mile.
- Contexto
- The humidity rise is always very rapid and starts from the lowest levels in the case of a dense sea fog. Fog associated with a frontal warm advection causes the humidity to rise first at upper levels.
- Mist and fog are, in many parts of the world, the primary causes for visibility restrictions of operational significance.
- Vicinity of the aerodrome (followed by FG = fog, FC = funnel cloud, SH = shower, PO = dust/sand whirls, BLDU = blowing dust, BLSA = blowing sand, BLSN = blowing snow, DS = duststorm, SS = sandstorm, TS = thunderstorm or VA = volcanic ash, e.g. VCFG = vicinity fog)
- Subárea1
- Meteorology
- Português
- nevoeiro