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ATSC 231 Mid Term Exam questions and answers Graded A+ 2026/2027 edition Radar echo intensity terminology - Light (15-30 dBZ), Moderate (30-40 dBZ), Heavy (40-50 dBZ), Extreme (50 dBZ) Radar beam tilt angle for low altitude operations -0.5° to 1.

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ATSC 231 Mid Term Exam questions and answers Graded A+ 2026/2027 edition Radar echo intensity terminology - Light (15-30 dBZ), Moderate (30-40 dBZ), Heavy (40-50 dBZ), Extreme (50 dBZ) Radar beam tilt angle for low altitude operations -0.5° to 1.5° Radar beam tilt angle for mid altitude operations -1.5° to 4.0° Radar beam tilt angle for high altitude operations -4.0° and

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ATSC 231 Mid Term Exam
questions and answers Graded
A+ 2026/2027 edition
Radar echo intensity terminology - ✅✅Light (15-30 dBZ), Moderate
(30-40 dBZ), Heavy (40-50 dBZ), Extreme (>50 dBZ)


Radar beam tilt angle for low altitude operations - ✅✅0.5° to 1.5°


Radar beam tilt angle for mid altitude operations - ✅✅1.5° to 4.0°


Radar beam tilt angle for high altitude operations - ✅✅4.0° and
above


Relationship between radar wavelength and precipitation attenuation -
✅✅Longer wavelengths (like S-band) attenuate less and penetrate
precipitation better


Common radar image artifacts - ✅✅Beam blockage, ground clutter,
ghosts, angels


Base reflectivity imagery - ✅✅Shows the lowest elevation angle
radar scan

, Composite reflectivity imagery - ✅✅Shows the highest reflectivity at
any scanned elevation


Advantages of base reflectivity imagery - ✅✅Shows lowest-level
precipitation, helpful for surface weather


Disadvantages of base reflectivity imagery - ✅✅May miss upper-
level strong echoes


Advantages of composite radar imagery - ✅✅Captures strong storm
tops, better for storm structure


Disadvantages of composite radar imagery - ✅✅May overestimate
surface intensity


Distinguishing stratiform from convective echoes on radar -
✅✅Stratiform = widespread, uniform; Convective = isolated, strong,
vertically developed


Sky condition reported in a METAR - ✅✅FEW, SCT, BKN, OVC - in
8ths of sky coverage

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