Answer: amount of precipitation reaching the ground
Explanation:
A Doppler radar uses the Doppler effect when measuring return echoes after having sent a signal (in this specific case microwaves).
In the case of weather radars, a microwave signal is sent to a target and then reflected, so that the radar system measures this difference between the sent signal and the reflected signal.
So, a Doppler radar is is useful to determine the intensity of the precipitation and its location, <u>by calculating its motion, and estimating its type</u> (for example: rain or snow, among others). In addition, this type of radar is able to <u>determine the height and the structure of storms by detecting the motion of rain droplets</u>.
However, <u>weather radars are not capable to determine the amount of precipitation reaching the ground.</u>
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