Simulation of Volatile Organic Compounds (VOCs)
Volatile Organic Compounds (VOCs) play an important role in the atmosphere as a precursor of aerosols and ozone, which are key air pollutants. While their atmospheric role as parent species of aerosols and ozone is highly emphasized in many studies, it is difficult to quantify their atmospheric impacts due to the complexity of chemical reactions and relatively short lifetimes, as well as the uncertainty of their emission sources.
We aim to gain a better understanding of the photochemistry and regional impacts of VOCs using Chemical Transport Models (CTMs). Among the various VOC species, aromatic compounds (benzene, toluene, xylenes) are in particular interest because of their abundance, high reactivity and contribution in total VOC emissions. Therefore, we examine the sensitivity of simulated trace gases such as ozone, nitrogen oxide to the inclusion of aromatic chemistry in the model. Model simulations can also be used for evaluation of emission inventories and understanding the emission characteristics of VOCs.