Doppler Radar

1. precipitation that evaporates before it hits the ground
4. this can show up on the radar from wildfires
6. this shows up on the velocity product when there's strong rotation; where strong reds and greens meet
8. the color of precipitation that is moving toward the radar on the velocity product
13. the type of radar product that shows where the greatest signal was reflected back within a storm
15. radar can detect these annoying bugs as they cross over Lake Erie
17. stands for "radio detection and ranging"
18. two words; this shows up on radar when tornadoes pick up objects
19. the further the beam gets from the radar, the greater the volume of space it accounts for, meaning it becomes less ____________ as the beam propagates further
22. the unit for strength of the signal reflected back to radar
23. speed with direction; can be positive or negative

2. because of the curvature of the Earth, radar beams increase in ________ the further they go
3. this changes when the frequency of a sound wave changes
4. radars tell how much precipitation there is based on the __________ of the signal reflected back to the radar
5. virga tends to occur in hot, arid regions like the _________
7. the color of precipitation that is moving perpendicular to the radar on the velocity product
9. two words; the apparent change in the frequency of a wave due to the wave source moving relative to the observer
10. two words; this phenomenon is the reason why astronomers believe the universe is expanding
11. radar can pick these up, especially right around sunrise
12. this changes when the frequency of a light wave changes
14. higher tilts of the radar can detect this high up in a storm; useful for pilots
16. the change in this part of the wave determines how fast the object is moving; measured in hertz
20. the angle at which the radar sends out waves
21. the color of precipitation that is moving away from the radar on the velocity product