John E FrederickJohn Frederick received his PhD. in Astro-Geophysics from the University of Colorado at Boulder, specializing in the physics and chemistry of the Earth's upper atmosphere. He performed research at the of Michigan and NASA's Goddard Space Flight Cente prior to accepting an appointment as Professor of Atmospheric Science at the University of Chicago in 1985. Professor Frederick has guided research by students in areas of radiative transfer, atmospheric chemistry and atmospheric energetics, with a specialty in studies related to the sun's ultraviolet radiation, and he has authored more than one hundred professional papers. Read More Read Less