Dr. Fehsenfeld's major area of interest is atmospheric chemistry, with emphasis on determination of the sources and processes that shape the ozone and aerosol distributions on regional to global scales and the implication for regional air quality and global climate understanding.
Dr. Fehsenfeld is a Senior Research Scientist with the Cooperative Institute in the Environmental Sciences of the University of Colorado. He is also a Fellow and Associate Director for Environmental Chemistry Division of CIRES. Prior to leaving Federal Service, he was a Senior Scientist at ESRL of the Department of Commerce (DOC) National Oceanic and Atmospheric Administration (NOAA). He has authored or co-author of over 325 refereed publications. His awards include the Department of Commerce (DOC) Silver MetalGroup Award (2004), Presidential Rank Award (2003), DOC Gold Medal (1996), DOC Gold Medal Group Award (1965), Special Act Outstanding Paper Award for Five Years (1967), DOC Outstanding Paper Award (1964, 1970, 1982,1989, 1998, 2000, 2003), DOC/NOAA Administrator's Award (1981, 2000), and his election as a Fellow of the American Geophysical Union (1988).