Environmental and Air Quality Engineering: Emission, transport, transformation, and fate of pollutants;

Agricultural air quality;

Biogeochemical cycling of pollutants;

Measurement and modeling of biogenic emissions of trace gases;

Photochemical oxidants and gas-to-particle conversion;

Biospheric-atmospheric interactions;

Aqueous waste purification;

Bioenvironmental engineering; and

Pollutant monitoring and control.