William R. Simpson

William R. Simpson (born July 25, 1966) is an American chemist . He is a pioneer in the field of snow chemistry. He is also a current researcher at University of Alaska Fairbanks' Geophysical Institute and International Arctic Research Center and an associate professor in the chemistry department. He is the principal investigator of the atmospheric chemistry group and director of the university's NSF Research Experience for Undergraduates program. He is known internationally for his research.