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Section 12.3 gathering weather data

Section 12.3 gathering weather data. Chapter 12: Meterology. Weather radar. Radar is needed to pinpoint where rain is falling at a given moment. The electromagnetic waves ignore small cloud droplets and bounce off large raindrops

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Section 12.3 gathering weather data

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  1. Section 12.3 gathering weather data Chapter 12: Meterology

  2. Weather radar • Radar is needed to pinpoint where rain is falling at a given moment. • The electromagnetic waves ignore small cloud droplets and bounce off large raindrops • A computer processes the signals and shows them on a screen for meteorologists to compute.

  3. Doppler Radar • The Doppler effect is the change in wave frequency that occurs in energy (sound or light) as that energy moves to or away from an observer • The horn of a train changes as it moves due to this effect. • Meteorologists use Doppler radar to determine wind speeds associated with precipitation in an area.

  4. Weather satellites • Satellites can be used to observe clouds from above. • Some satellites use infrared imaging to detect differences in thermal energy. • Meteorologists can use the infrared to determine the type of clouds in an area.

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