Dr. Ryan Stauffer is a Research Scientist at NASA Goddard Space Flight Center’s Atmospheric Chemistry and Dynamics Laboratory. He studies air pollution and long-term records of balloon-borne ozone and water vapor profile data, and the links among the profiles, meteorology, climate, and near-surface pollution. He serves as the Principal Investigator for the Southern Hemisphere Additional Ozonesondes (SHADOZ) tropical ozonesonde network Dr. Stauffer has also participated in numerous field campaigns focused on near-surface air quality and pollution.