WX 201 Exam 2 with correct Answers (Graded A)

WX 201 Exam 2 with correct Answers (Graded A) Reflectivity attenutation absorption of radiation by targets WSR-88D Weather Surveillance Radar 1988 Doppler, detects precip and atmospheric movement Doppler ability to detect the "shift in the phase" of an energy pulse aircraft radar less precise than WSR-88D ground radar elevated to avoid terrain, raises elevation angle 1 degree every 360 degree scan, probably wont give you full picture of scan, cone of silence where radar can't reach warm clouds cold clouds collision-coalescence process Bergeron Process growth of ice crystals through deposition, requires coexistence of ice crystals and liquid cloud droplets supercooled water water below freezing but not frozen supersaturated condensation or or depostion evaporation or sublimation Riming Accretion of supercooled water to ice crystals as they fall in a cloud (results in graupel, or snow pellets aggregation Collision and coalescence of two ice crystals• Most effective in clouds near freezing point because crystals are "wet" and more sticky graupel snow pellets