The Impact of Anthropogenic and Biogenic Emissions on Surface Ozone Concentrations in Istanbul: A Modeling Study

Abstract

Ground level ozone levels were simulated for Istanbul during a summer episode in June 2008, using MM5/CMAQ model system. Two sets of base runs were carried out in order to investigate the impact of biogenic emissions on ozone concentrations in Istanbul. The inclusion of biogenic emissions significantly improved the performance of the model, particularly the temporal variation of ozone concentrations. It was found out that biogenic NMVOCs emissions enhanced maximum ozone concentrations in the GIA up to 25 ppb. The sensitivity analysis pointed to NOx-sensitive chemistry in the region