Erik Larson is an atmospheric scientist interested in Earth and planetary atmospheres, which he studies with numerical models. He is a research scientist with the Chemical Sciences Division at the National Oceanic and Atmospheric Administration (NOAA). His research includes estimating Earth's radiative forcing and energy budget from the CMIP5 output. He also develops and applies the NCAR CESM model to problems including the effects of rocket emissions and the seasonal cycle of aerosols on Titan.