China has made impressive progress improving its air quality over the last decade. These changes have likely been spurred by environmental regulations. Future regulatory actions will benefit from a detailed accounting of the emissions, air quality, and health benefits directly attributable to existing regulations.
Annual average PM2.5 concentration in Beijing. In work funded by the Health Effects Institute, I will work with an international, cross-disciplinary team to directly quantify benefits of environmental regulations targeting autmoboiles, power plants, and more.
As part of my PhD research, I investigated changes in air quality and source-specific emissions across the Southeast. I employed several data sources—such as observed and modeled air quality and emissions—and analytical tools—including both statistical and deterministic modeling. For instance, I showed how emissions at power plants in the Southeast decreased differently with different regulations: These emissions changes (almost 90% at power plants since the mid-1990s) combined with other major emissions changes (from cars, for instance) led to big changes in the air quality in the Southeast.