Analysis of the seasonal characteristics of potential ozone source areas and transmission pathways in Guigang in 2022
To reveal the transmission patterns and pollution sources of Ozone(O3)in Guigang City in different seasons of 2022,this study uses the MeteoInfo backward trajectory mode,combined with the hourly concentration data of O3,to conduct an in-depth analysis of the daily 72-hour backward trajectories at a height of 500 m for each season in Guigang City in 2022.The Potential Source Contribution Function(PSCF)analysis method and Concentration Weighted Trajectory(CWT)analysis method are used to identify the potential contribution source area and contribution size of O3.The results show that:(1)the near-surface atmospheric pollution transport in Guigang in different seasons is dominated by long-distance transport,and the long-distance transport in the north-east direction has the greatest impact on O3 pollution concentration.(2)Henan,Hubei,Hunan,and Guangxi Guigang and its surrounding areas are the main potential source areas of O3,with the widest range of potential source area in autumn.(3)The sources of O3 pollution in Guigang City are regional transport and local emissions,with regional transport contributing more from Henan,Hubei,Jiangxi and Hunan,and local pollution being more significantly affected by northern Guigang.
万方数据
维普
