Scales studies space weather – physical processes that are a result of charged particles emanating from the sun in the form of a solar wind, which can adversely affect spacecraft, satellites, and astronauts as well as communication, navigation, and power systems on Earth. He uses use a high-latitude network of radars to obtain increasingly sophisticated views of electric fields, plasma structures, atmospheric waves, and other effects in the ionosphere and atmosphere.

Also see:

http://www.research.vt.edu/scholar-of-the-week/wayne-scales(external link)