 He joined the National Severe Storms Laboratory (NSSL) in 1986 as a research meteorologist and is an adjunct professor at the affiliated University of Oklahoma (OU).He was an inaugural awardee of the Presidential Early Career Award for Scientists and Engineers (PECASE) in 1996 and was a contributor to the Physical Science Basis portion of Fourth Assessment Report of the IPCC, an organisation that was co-awarded the 2007 Nobel Peace Prize.He is a Fellow of the American Meteorological Society (AMS) and a member of Sigma Xi and Chi Epsilon Pi.