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. 2014.

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  • Surface weather observation — Surface weather observations are the fundamental data used for safety as well as climatological reasons to forecast weather and issue warnings worldwide. [Office of the Federal Coordinator of Meteorology. [http://www.ofcm.gov/fmh 1/pdf/B CH2.pdf… …   Wikipedia

  • Visibility (geometry) — Visibility is a mathematical abstraction of the real life notion of visibility.Given a set of obstacles in the Euclidean space, two points in the space are said to be visible to each other, if the line segment that joins them does not intersect… …   Wikipedia

  • Surface Marker Buoy — (standard) = A Surface Marker Buoy, SMB or simply a blob is an inflatable buoy used by SCUBA divers, with a line, to mark the diver s position to their surface, safety boat while the diver is underwater.SMBs are inflated on the surface before… …   Wikipedia

  • 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

  • Surface weather analysis — A surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground based weather stations. [ Air Apparent: How Meteorologists Learned… …   Wikipedia

  • Surface marker buoy — A surface marker buoy, SMB or simply a blob is an inflatable buoy used by scuba divers, with a line, to indicate the diver s position to their surface safety boat while the diver is underwater. Contents 1 Standard buoy 2 Decompression buoy 2.1… …   Wikipedia

  • surface-movement radar — Radars installed at major airports to provide a very precise radar picture of traffic on the aerodrome surface. They are used in poor visibility to control the movement of traffic in aprons, taxiways, and runways. Their maximum range is… …   Aviation dictionary

  • Driver visibility — In transport, driver visibility is the maximum distance at which the driver of a vehicle can see and identify prominent objects around the vehicle.[1] Visibility is primarily determined by weather conditions (see visibility) and by a vehicle s… …   Wikipedia

  • Hidden surface determination — In 3D computer graphics, hidden surface determination (also known as hidden surface removal (HSR), occlusion culling (OC) or visible surface determination (VSD)) is the process used to determine which surfaces and parts of surfaces are not… …   Wikipedia

  • High-visibility clothing — High visibility clothing, a type of personal protective equipment (PPE), is any clothing worn that has highly reflective properties or a color that is easily discernible from any background. Orange hunting vests are a popular example of high… …   Wikipedia

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