Simulation and analysis of high ozone episodes observed in the Hong Kong airshed: An explicit model approach

The analysis and forecast of elevated boundary layer ozone is of particular concern since it is known to have adverse effects on health, vegetation and material. The main contributors to the formation of photochemical smog, and high ozone levels are the emissions of Volatile Organic Compounds (VOC) and NOx. There is a complex relationship between VOC and NOx leading to ozone generation, which varies greatly depending on the geographic and regional setting. Modelling based on observational data provides one way to determine the major components, which have the greatest impact on ozone formation. Only through a combination of measurements, emission data and modelling is it possible to perform analysis, forecast, and develop sound strategies to minimize the occurrence of these high ozone events.