5-19. Which of the following statements is NOT accurate pertaining to ground  clutter? 1. Ground  clutter  normally  appears as a cluster of points that have a speckled nature 2. Ground clutter may be identifiable as wedges of different  colors 3. Decreasing  the  antenna elevation  will  decrease  ground clutter 4. A time-lapse of the Reflectivity  products  will  show no  movement  of  ground  clutter returns 5-20. What is the maximum number of clutter  suppression  regions  that may be edited at the Unit Control Position  (UCP)? 1. 15 2. 12 3. 10 4. 5 5-21. The presence of sidelobes may have an impact on which of the following parameters? 1. The  pulse  repetition  frequency (PRF) 2. The  reflectivity  of  ground clutter 3. The  velocity  pattern  in  strong echo  regions 4. The  accurate  assessment  of storm cloud tops 5-22. Anomalous  returns  may  occur  near sunrise and sunset for several radials due to solar effects. What appearance  may  these  solar  effects take? 1. 2. 3. 4. 5-23. The Numerous    “speckled” areas A  narrow   “baseball bat” shape Numerous    “spiked” areas “Elliptically”   shaped returns Mean  Radial  Velocity  Cross- Section product may be used as an aid  in  identifying  mesocyclone signatures. 1. True 2. False 5-24. The  mesocyclone  algorithm  provides the position of the mesocyclone reflected  onto  the  lowest  elevation angle in which the mesocyclone was detected. What fact makes this possible? 1. Mesocyclones  cannot  be  detected by doppler radar at mid and high levels of the atmosphere 2. The higher the elevation angle, the less accurate the tracking information 3. Mesocyclones  can  only  be identified  at  low  elevation angles 4. Mesocyclones  normally  “tilt” with  increasing  height 5-25. Which  of  the  following  procedures is best for identifying wind shear in the doppler velocity field? 1. Note  changes  in  the  velocity field over time 2. Increase the unit gain 3. Note wider bands in the velocity  field 4. Note  any  elliptical  shaped returns 5-26. The  Cross-section  product  can integrate  returns  from  cloud  layers from the surface to what maximum height? 1. 30,000 ft 2. 50,000  ft 3. 70,000  ft 4. 90,000  ft 5-27. Stratus-type clouds may NOT be detected by the WSR-88D for which of the following reasons? 1. Transparency  of  the  layer 2. Vertical extent of the layer 3. The size of the cloud particles 4. Stratus-type  clouds  generally form at levels below the lowest antenna  angle 5-28. Frontal  precipitation  from stratiform  clouds  is  occurring  at your  station. Which of the following  statements  would  be  valid when you observe the wind profile on the WSR-88D? 1. The wind profile may be useful in determining the nature of the  front 2. Backing of the wind profile with  height  would  indicate  warm air  advection 3. Veering of the wind profile with height would indicate cold air  advection 32