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Backscatter

Meteorology Backing WindsBack-sheared Anvil

BACKSCATTER A radar echo that is reflected, or scattered, at 180 degrees to the direction of the incident wave. Also the scattering of radiant energy into space before it reaches the earth's surface.

 


Solar Backscatter Ultraviolet Radiometer (SBUV) Instrument that measures the vertical distribution and total ozone in the Earth's atmosphere. Data is used for the continuous monitoring of ozone distribution to estimate long-term trends.

Backscatter relates to radar signals being reflected off targets other than precipitation such as aeroplanes, topography (mountains and hills), dust (for example, radars in a desert locatality may suffer from dust echoes), birds and swarms of insects.

backscatter depolarization ratioThe ratio of cross polarized to co-polarized elastic backscatter.

The sum of all backscattering cross-sections (e.g., precipitation particles) in a pulse resolution volume divided by that volume.

Radar ReflectivityThe sum of all backscattering cross-sections (e.g., precipitation particles) in a pulse resolution volume divided by that volume.

The time delay between the backscattered radiation from the storm and the bounced and scattered radiation from the large hail causes the reflectivity from the hail to appear to come from a farther range than the actual storm.

BackscatterThe portion of power scattered back in the incident direction.BacksightIn hydrologic terms, a rod reading taken on a point of known elevation, a benchmark or a turning point.

Light is produced in a modulated source and the resulting backscattered or reflected light is analyzed to quantify some property of the atmosphere.

These radars depend on backscattering to produce a detectable echo from a target. Bistatic radars have the transmitter and its antenna at one location and the receiver and its antenna at a remote location.

Polarization RadarA radar which takes advantage of ways in which the transmitted waves' polarization affect the backscattering. Such radars may alternately transmit horizontal and vertically polarized beams, and measure differential reflectivity.

The value of Z is a function of the amount of radar beam energy that is backscattered by a target and detected as a signal (or echo). Higher values of Z (and dBZ) thus indicate more energy being backscattered by a target.

planetary albedo The fraction (approximately 30%) of incident solar radiation that is reflected by the earth-atmosphere system and returned to space, mostly by backscatter from clouds in the atmosphere.

A radar which takes advantage of ways in which the transmitted waves' polarization affect the backscattering. Such radars may alternately transmit horizontal and vertically polarized beams, and measure differential reflectivity.
Pollutant ...

Thin lines typically are located ahead of a thunderstorm, but can be associated with cold fronts and dry lines. The thin line is caused by backscattering of the radar's pulse off of a gradient in the index of refraction of air (i.

A technique used to detect atmospheric constituents or related parameters such as atmospheric extinction coefficient. Light is produced in a modulated source and the resulting backscattered or reflected light is analyzed to quantify some property of ...

The fraction of incident solar radiation that is reflected by a planet and returned to space. The planetary albedo of the Earth-atmosphere system is approximately 30 percent, most of which is due to backscatter from clouds in the atmosphere.

See also: Water, Radar, Surface, Meteor, Weather

Meteorology Backing WindsBack-sheared Anvil

 
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