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frost
- Definição1
- The condition that exists when the temperature of the earth's surface and earthbound objects fall below freezing.
- Fonte1
- AMERICAN METEOROLOGICAL SOCIETY. Glossary of meteorology. [S.l., última modificação 05 oct. 2015]. Disponível em: < http://glossary.ametsoc.org/wiki/Main_Page >. Acesso em: 19 out. 2021.
- Definição2
- White ice crystals deposited on the surface of objects that have a temperature below the freezing point of water.
- Fonte2
- WEATHER glossary. [S.l.], 2021. Disponível em:
- Definição3
- Ice crystals formed from airborne moisture on a surface whose temperature is below freezing. Frost differs from ice in that the frost crystals grow independently and therefore have a more granular texture.
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Annex 14 to the Convention on International Civil Aviation: aerodromes: volume 1: aerodrome design and operation. 8th ed. Montreal, 2018. (Annex 14).
- Fonte4
- WORLD METEOROLOGICAL ORGANIZATION. Guide to meteorological instruments and methods of observation. 7th ed. Geneva, 2006. (WMO, n.8).
- Nota Adicional1
- Below freezing refers to air temperature equal to or less than the freezing point of water (0 degree Celsius).
- Nota Adicional2
- Under certain conditions frost can cause the surface to become very slippery and it is then reported appropriately as reduced braking action.
- Nota Adicional3
- Under certain conditions frost can cause the surface to become very slippery and it is then reported appropriately as reduced braking action.
- Contexto
- In many climates, it may be necessary to heat the device to prevent deposition of frost and dew.
- The philosophy of the runway condition report is that the aerodrome operator assesses the runway surface conditions whenever water, snow, slush, ice or frost are present on an operational runway. From this assessment, a runway condition code (RWYCC) and a description of the runway surface are reported which can be used by the flight crew for aeroplane performance calculations.
- Subárea
- Meteorology
- Ver
- icing
- Français
- givre