Doppler radars use the Doppler Effect to detect reflectivity and rotational velocity to predict weather and prevent catastrophes during severe storms. Reflectivity is a measure of the size of the particles in the air and rotational velocity is a measure of the speed and direction of the air relative to the radar station.This is an image showing the hook echo of a F4 tornado as it hit the General Motors plant in Oklahoma City. As a result of NOAA sending out a tornado warning all 1,200 employees were safely evacuated.
http://www.noaanews.noaa.gov/stories/s2097.htm
No comments:
Post a Comment