Azimuth Angle angle of beam with respect to north
The first piece of information is the angle of the radar beam with respect to north; called the "azimuth angle".
VAD - Velocity Azimuth Display. A radar display on which mean radial velocity is plotted as a function of azimuth. See VWP.
Vault - Same as BWER.
azimuth"The length of the arc of the horizon (in degrees) intercepted between a given point and a reference direction, usually north, and measured clockwise from the reference direction.
azimuth or azimuth angle
An angular direction described as the length of arc (in degrees) measured clockwise along the local horizon, from a reference point (usually true north), ...
Azimuth or Azimuth Angle - The length of arc measured clockwise along the astronomical horizon (in degrees of arc) from the adopted reference direction, usually true north, ...
Azimuth The direction, in degrees referenced to true north, that an antenna must be pointed to receive a satellite signal (compass direction). The angular distance is measured in a clockwise direction.
- B - ...
Azimuth Angle
The direction or bearing toward which a sloping surface faces (e.g., a north-facing slope has an azimuth angle of 360¬?; a northeast-facing slope, an azimuth angle of 45¬?).
Azores High ...
Azimuth: A direction in terms of a 360o compass. North is at 0o. East is at 90o. South is at 180o. West is at 270o.
AZIMUTH - The degree measure of direction from 0 to 360 degrees in a clockwise direction where 0 or 360 degrees is due north and 180 degrees is due south. due north ...
Velocity Azimuth Display
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Couplet, Kinetic energy, Laminar flow, Rankine Vortex, UVM, Vertical Velocity, VLCTY
Vadose Zone - permalink - collapse ...
Velocity Azimuth Display (VAD): This WSR-88D radar product displays a graphical plot of mean radial velocity versus azimuth angle for a particular altitude.
Radarsonde A system in which radar techniques are used to determine the range, elevation, and azimuth of a radar target carried aloft by a radiosonde, so that wind data may be obtained along with the other meteorological data.
An intensity-modulated display on which echo signals are shown in plain view with range and azimuth angle displayed in polar coordinates, forming a map-like display.
THEODOLITE An optical instrument used to track the motion of a pilot balloon, or pibal, by measuring the elevation and azimuth angles.
VAACVolcanic Ash Advisory CentersVADVelocity Azimuth DisplayVAD Wind ProfileA radar plot of horizontal winds, derived from VAD data, as a function of height above a Doppler Radar.
AnthelionA luminous white spot that appears on the parhelic circle at the same altitude as the sun and 180 degrees from it in azimuth. Anthropogenic SourceA pollutant source caused or produced by humans.
Range Height IndicatorThe RHI is a radar display in which the radar scans vertically, with the antenna pointing at a specific azimuth or radial.
This dish has the capability to rotate 360 degrees in azimuth and up to 20 degrees in elevation allowing the radar to cover a huge volume of atmosphere.
VAD - Abbreviation for velocity-azimuth display.
vapor - Any substance existing in the gaseous state at a temperature lower than that of its critical point; that is, a gas cool enough to be liquefied if sufficient pressure were applied to it.
Plan Position Indicator: (PPI) A radar monitor scope which displays the location of precipitation using the range in miles and degrees in azimuth.
Planetary Weather Systems: Northeast & Southeast Trade Winds located at 0 Degs. - 30 Degs. N. & S.
A north wind comes out of the north and blows southward, while a west wind comes out of the west and blows eastward. Wind direction is best described by its azimuth, measured clockwise from north from 0° to 360°.
WIND DIRECTION: The direction from which the wind is blowing. Usually measured in degrees azimuth.
WIND GUST: The peak momentary wind velocity within a given interval of time.
RANGE RESOLUTION The ability of radar to distinguish between targets on the same azimuth but at different ranges.
PLAN POSITION INDICATOR Also known as a PPI Scope, it is a radar indicator scope displaying range and azimuth of targets in polar coordinates.
plan position indicator (PPI) scope—A radar indicator scope displaying range and azimuth of targets in polar coordinates.
that measures wind speed and direction at different levels of the atmosphere. The new National Weather Service WSR-88D radar has this capability, and its vertical wind profile is called a VAD Wind Profile (or VWP). VAD stands for Velocity Azimuth ...
Astronomical twilight refers to the interval of incomplete darkness that occurs when the sun's center is approximately 18 degrees below the horizon. There is no discernible horizon glow left over the sun's azimuth.
 See also: Radar, Weather, Pressure, Atmosphere, Elevation
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