In the context of global climate change, combustion-generated soot or black carbon is a major concern [1,2]. Unfortunately our understanding of evolution of soot in atmosphere is very limited. Freshly-formed soot undergoes a dramatic change in its physical and chemical properties as it mixes with other aerosols and volatile matters in the exhaust of the combustion devices and in atmosphere.
This research theme at CCL aims to understand the physics of evolution of soot in the atmosphere so that we can be better equipped to predict and control its effect. We try to look at atmospheric evolution of soot from the point-of-view of an combustion scientist. Therefore we put emphasis on predicting properties of soot or black carbon based on its source — e.g., whether coming from a Diesel vehicle or a wood-stove — and investigate how different soot mature differently in the atmosphere.
 U.S. EPA., EPA/600/R-08/139F. 2009.
 Bond, T. C. et al, J. Geophys. Res. Atmos., 118:1-173. 2013