Analysis of Effect of Ozone Generation in Autumn in Zhuhai City
In recent years,the autumn ozone pollution in the Pearl River Delta has become more and more concentrated in Zhuhai,Zhongshan,Jiangmen and other western banks of the Pearl River estuary,and the situation that Zhuhai alone exceeds the standard of ozone is also more common.In order to understand the causes of ozone(O3)pollution in autumn in Zhuhai City,the causes of ozone pollution and emission reduction effect of ozone pollution in Zhuhai City were analyzed by using the monitoring number of sub-stations in October 2023 and the observed chemical box model(OBM).The results showed that the ozone pollution days in Zhuhai showed high temperature and low humidity,and the source nature of precursor emissions did not change,and the accumulation was obvious in the early morning.M-/p-xylene and toluene are the species that contribute the most to ozone generation,and the increase of toluene and isoprene is the largest on pollution days.M-/p-xylene and straight-chain olefin are more sensitive,so it is necessary to pay attention to the contribution of solvent use,chemical sources and plant sources.Reducing all kinds of VOCs is conducive to reducing local ozone generation,and reducing anthropogenic source emissions by 20%can achieve slightly exceeding the standard days to good.
autumninfluenceozone(O3)observation based model(OBM)Zhuhai
NETL
NSTL
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