Dr. Yamartino is an internationally recognized expert on the development of specialized air quality models. During his 33 years of professional experience, he has developed and evaluated plume, puff, Lagrangian particle, and Eulerian grid models applicable to a wide range of spatial and temporal scales. He has made modeling contributions on such diverse topics as reactive plumes, surface depletion of plumes, urban ozone, acidic deposition, high fidelity numerical advection, low wind speed dispersion, concentration fluctuations, hybrid source receptor analyses, street canyon and garage ventilation, airport air quality, and turbulence statistics.