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Frequently Asked Questions

How can radar be used to help predict weather?

Answer: The Doppler radar used in weather forecasting measures the direction and speed, or velocity, of objects such as drops of precipitation. This is called the Doppler Effect and is used to determine whether movement in the atmosphere is horizontally toward or away from the radar, which aides in weather forecasting.

How does radar help meteorologists forecast the weather?

Radar is used to gauge the speed of pitches at a baseball game. Doppler radar can help meteorologists predict winter storms. Meteorologists use weather Doppler radar to help locate and forecast storms. Pregnancy ultrasound uses 2D and 3D Doppler to give parents and obstetricians a baby's first picture.

What frequency does weather radar use?

Low-frequency radar is radar which uses frequencies lower than 1 GHz such as L-band, UHF, VHF, and HF, as opposed to the usual radar bands, which range from 2 GHz and up, and the maximum is 40 GHz.The radar cross section of any target depends on the radar transmitted frequency.

How do satellites forecast weather?

Weather satellites are used to observe ocean currents. Current weather patterns are detected and transmitted by weather satellites. Weather satellites may be used to observe snow cover. Dust and sand storms can be observed by a weather satellite. The images from weather satellites are used on daily weather broadcasts.


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