Anomalous propagation

anomalous propagation (sometimes called AP)—In radar meteorology, the greater than normal bending of the radar beam such that echoes are received from ground targets at distances greater than normal ground clutter.

ANOMALOUS PROPAGATION
This refers to the non-standard propagation of a beam of energy, radio or radar, under certain atmospheric conditions, appearing as false (non-precipitation) echoes. May be referred to as A.P.
ANTARCTIC ...

Anomalous Propagation (AP) Radio wave propagation that occurs due to non-standard atmospheric conditions. Most common usage refers to ground returns detected by downward bending of the radar beam.

AP- Anomalous Propagation. This is a false echo on radar data
APCH- Approach(ing)
AR-WRF- Forecast model. Advanced Research WRF developed primarily at the U.S. National Center for Atmospheric Research (NCAR) WRF Source Code ...

AP - Anomalous Propagation. Radar term for false (non-precipitation) echoes resulting from nonstandard propagation of the radar beam under certain atmospheric conditions.

AP (Anomalous Propagation) - a radar term for false (non-precipitation) echoes resulting from nonstandard propagation of the radar beam under certain atmospheric conditions ...

anaprop"See anomalous propagation.
anchor balloon"A super-pressure balloon suspended below a zero-pressure balloon to permit the zero-pressure balloon to survive night-time cooling without the expenditure of ballast and daytime warming ...

ANOMALOUS PROPAGATION (AP)Non-standard atmospheric temperature or moisture gradients will cause all or part of the radar beam to propagate along a non-normal path.

AP - Abbreviation for anomalous propagation.
aridity - The degree to which a climate lacks effective, life-promoting moisture; the opposite of humidity, in the climate sense of the term.

Anomalous Propagation (AP) Due to temperature or moisture a radar beam is bent toward the ground and produces false echos on the radar scope.
Anticyclone: High Pressure: Clock-Wise Air Flow: Desending Air: ...

See also: Air, High, Horizon, Cloud, Earth