Dr. Nima Afshar-Mohajer is an air quality scientist and a certified industrial hygienist. He has conducted a broad range of air-related studies at various geographic sites in the US, from oil spills in the southern Gulf states to taconite mines in northern Minnesota. He has extensive expertise in the dispersion modeling of air pollutants, including emissions from stacks of phosphate fertilizer plants and source apportionment modeling of polycyclic aromatic hydrocarbons. He has also estimated the impact of global aircraft emissions on criteria air pollutants. He has a strong background in the development, evaluation, and optimization of air quality monitoring sensors and hazard map preparation for a variety of air pollutants. He has published numerous articles in peer-reviewed journals in the areas of air pollutant sampling, air quality monitoring, emission characterization, occupational exposure evaluation, and health risk assessment. After receiving his Ph.D. in environmental engineering from the University of Florida, he spent six years in postdoctoral training at the Johns Hopkins Bloomberg School of Public Health.