- ground visibility
- Prevailing horizontal visibility near the Earth
Military dictionary. 2000.
ground visibility
Look at other dictionaries:
ground visibility — The visibility at an aerodrome, as reported by an accredited observer (ICAO). The visibility is contained in a weather observation reported by an ATC (air traffic control) unit, an FSS (flight service station), a community aerodrome radio station … Aviation dictionary
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ground controlled approach — ground controlled approach, an approach and landing by an aircraft under ground control, due to poor visibility. Abbr: GCA (no periods) … Useful english dictionary
Visibility — In meteorology, visibility is a measure of the distance at which an object or light can be clearly discerned. It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country.… … Wikipedia
Ground delay program — An Air Traffic Control Ground delay program or FAA Flow Control is a traffic flow initiative that is instituted by the Federal Aviation Administration in the United States Air Space System.This program is usually instituted when the following… … Wikipedia
ground level ozone — Naturally accurring compound which is also formed by the interaction of VOCs, NOx and sunlight, giving rise to smog and poor low level visibility, particularly during hot sunny spells … Petroleum refining glossary
surface visibility — Visibility observed from eye level above the ground. It is the distance at which prominent objects are clearly visible during the day and at night with lights of specified luminosity … Aviation dictionary
slant visibility — The visibility from air to ground as seen by aircraft while approaching the airfield. It may be more or less than the horizontal visibility as observed from the ground. In fog and mist, the airfield may be visible from directly overhead, but the… … Aviation dictionary
Prevailing visibility — in aviation is a measurement of the greatest distance visible throughout at least half of the horizon, not necessarily continuously. To take the prevailing visibility, controllers reference a number of visual reference points: usually buildings,… … Wikipedia
Zero Visibility — Infobox VG title = Zero Visibility developer = [http://www.putfile.com/reggaming/images/22902 Reynesian Gaming] publisher = designer = series = Zero Visibility engine = picture format = 800 x 600 version = released = genre = Real time strategy… … Wikipedia
