[A-AS09] Atmospheric Chemistry

[AAS09-P20] Simulation of excessive biogenic ozone production due to the high temperature

*Kenji Miki¹, Syuichi Itahashi¹ (1.Central Research Institute of Electric Power Industry)

Keywords:ozone, biogenic volatile organic compounds, high temperature

Ozone is an important atmospheric substance that contributes to global warming and is also an indicator of air pollution as it is a by-product produced from NOx and VOCs. In this study, the effect of temperature rise on the excess increase in atmospheric ozone, with and without the influence of biogenic volatile organic compounds, was calculated by simulation for the extremely hot summer of 2018. The relationship between atmospheric ozone concentration and temperature through vegetation in an urban and suburban area was analysed. The results of this study show that the amount of isoprene and NOx, the precursors of ozone, were strongly dominated by temperature and solar radiation. In addition, although local-sclae antropogenic sources have been considered as the main source of ozone in urban areas in summer in the troposphere, our results show that ozone of vegetation origin cannot be ignored.