Which of the following statements about Doppler Radar is true?

1. Which of the following statements about Doppler Radar is true?

a. Doppler Radar can detect and display rainfall intensity over its target region.
b. Doppler Radar can measure and display the horizontal speed of rain, toward or away from the radar antenna.
c. The brightness of a radar echo is directly proportional to the intensity of the falling rain.
d. All of these statements about Doppler Radar are true.

2. Which of the following statements about the scales of motion, as they apply to meteorology, is true?

a. Microscale motion involves small eddies with typical dimensions on the order of a few meters.
b. Mesoscale motion includes thunderstorms, tornados, small tropical storms, and other activity with dimensions from a few kilometers to a few hundred kilometers in diameter.
c. The synoptic scale involves the large features that would typically show up on a weather map, like centers of high pressure and low pressure.
d. All of these statements are true.

3. Suppose the dry adiabatic lapse rate is 10 degrees Celsius per 1000 meters and the saturated adiabatic lapse rate is 6 degrees Celsius per 1000 meters. A sounding of the atmosphere indicates an environmental lapse rate of 9 degrees Celsius per 1000 meters. How would you characterize the stability at this location?

a. Absolutely Stable Air
b. Absolutely Unstable Air
c. Conditionally Unstable Air
d. There is not enough information to answer this question.