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Article: 1979: 25 years ago; Doppler radar: research at the National Severe Storms Laboratory.(LookingBack)
- Article from:
- Weatherwise
- Article date:
- March 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Heldref Publications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Many tools and techniques contribute to our increased understanding of how severe storms form and evolve. Shortly after World War II, it was recognized that a well calibrated radar could measure the strength of thunderstorms. This is accomplished by transmitting a short pulse of electromagnetic energy and "listening" to the small fraction of energy scattered back to the radar by the storm. The strength of the returned signal is an indication of the rain's intensity and the possible presence of hail. The time difference between when the pulse is transmitted and returned tells the radar operator the distance to the echo. The process of transmitting and receiving is repeated ...
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