Science / Weather / 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.

Acoustic Doppler Current Profiler (ADCP)

Science / Tides and Currents / Acoustic Doppler Current Profiler (ADCP): Current measuring instrument employing the transmission of high frequency acoustic signals in the water. The current is determined by a Doppler shift in the backscatter echo from plankton, suspended s MORE

Reflectivity Factor (Z)

Technology / Radar / Reflectivity Factor (Z): Integral over the backscatter cross-section of the particles in a pulse volume. For particles small compared to the wavelength the scatter cross-section is d6, where d is the diameter of the particle. MORE