Professor Harley studies the sources, photochemical formation, and control of air pollution. His research group uses mathematical modeling, time series analysis, and field studies to synthesize and test understanding of air pollution problems. A major focus is on understanding the emissions from the transportation sector (especially gasoline and diesel engines), and changes over time due to improvements in fuels and control technologies. Pollutants of interest include carbon dioxide (CO2), nitrogen oxides (NOx), volatile organic compounds (VOC), carbon monoxide (CO), ozone (O3), and particulate matter (PM).
In the News
Strict new emission standards for diesel trucks have reduced their emissions of unhealthy pollutants by half at the bustling Port of Oakland, says a team of researchers led by Rob Harley, professor of civil and environmental engineering.