Block 2 (ATSC 231) Questions and Answers Already Graded A

Block 2 (ATSC 231) Questions and Answers Already Graded A What does RADAR stand for? RAdio Detection And Ranging. Radar Principles? Detection of objects by radio (electromagnetic) waves. 4 types of radar Bands? L - 20 cm S - 10 cm C - 5 cm X - 3 c,m What are L-Band Radar's used for and characteristics? ATC and not sensitive to precipitation. What are S and C Band Radar used for and characteristics? Ground based Weather Radar and sensitive to precipitation. What is X Band Radar used for? Airborne Weather Radar and very sensitive to precipitation. Differences in Radar antenna sizes and characteristics? Longer the antenna, means the tighter the cone of view. What can Doppler Radar do? Be able to determine the frequency shift of transmitted wave called spectrum width. What does dual polarization detect? Birds, aircraft icing, and large and giant hail. Echo strength depends on what? -Size of targets -Number of targets -Composition of targets -Distance to targets What reflects more for Echo strength wet or dry? Wet. What unit is Radar Reflectivity measured in? dBZ. What is PPI and what does it display? Plan Position Indicator Displays: Azimuth, Range, and Echo Intensity. What is RHI and what does it display? Range Height Indicator Displays: Range, Height, and Echo Intensity. What is WARP and who uses it? Weather And Radar Processor System Used for controllers to advise pilots of weather hazards. Airborne radar reflectivity numbers? 57 dBZ - Magenta 50-56 dBZ - Magenta 47-49 dBZ - Red 41-46 dBZ - Red 30-40 dBZ - Yellow MDS-30 dBZ - Green Airborne Weather Radar limitations? Attenuation, beam resolution, and beam management. What problem does Attenuation cause for airborne radar? Prevents radar returns from behind stronger echoes. Beam resolution numbers? 1 degree = 100 ft @ 1 nm What is TDWR? Terminal Doppler Weather Radar. What does TDWR detect and range? Microburst and gust factor Range 9-12 miles from the airport What is ASR-9? Airport Surveillance Radar, adds enhanced weather detection to pre-existing ATC radar. Limited Wind Shear Detection What is WSR-88D? Weather Service Radar, started in 1988, doppler, and NEXRAD What is VCP and the modes? Volume Coverage Pattern Clear Air Mode and Precipitation Mode 10 min update 4 -6 min update Reflectivity proportional rainfall intensity? 30 dBZ - Light 30-40 dBZ - Moderate 40-50 dBZ - Heavy 50 dBZ - Extreme What is Radar Mosaics? Multiple or single site radar images combined to produce radar image on regional or national scale. What is Base Reflectivity and range? Displays location of reflectivity data. Lowest tilt 0.5 degrees Max 124 NM Long Range 248 NM What is composite reflectivity? Determine the vertical structure of precipitation. What satellite do we use for meteorology and what does it do? Geostationary. Rotates with the same speed as the earth so stays over the same position. Satellite owned by NOAA and what its name? Geostationary Operational Environmental Satellite (GOES). Young weather system's look like what? Looks like a leaf. Old weather system look like what? Looks like a coma. 1000 mb level? 300 ft. 850 mb level? 5,000 ft. 700 mb level? 10,000 ft. 500 mb level? 18,000 ft. 300 mb level? 30,000 ft. 200 mb level? 40,000 ft. 100 mb level? 53,000 ft.