Temporal and Spatial Distribution of Ozone and Its Influencing Factors in Hechi City
The characterization of the spatial and temporal distribution of ozone and the analysis of its driving influencing factors are hot issues in atmospheric environmental science field.In this study,the spatial and temporal distribution characteristics of ozone and its influencing factors in Hechi City in 2022 were analyzed by using multi-source monitoring data and geostatistical methods.The results show that,(1)the ozone concentration in Hechi shows obvious seasonal fluctuations,peaking twice in spring and fall,which is a characteristic"M-type"curve of southern cities.The O3 concentration shows a"daytime high and nighttime low"single-peak trend on the day-to-day variation.(2)SO2,NO2,PM10,PM2.5 and ozone(O3)concentrations in the air in Hechi City in 2022 showed significant positive correlations,while the correlation between CO and O3 varied with the month,reflecting that ozone production and pollutant concentrations in the atmospheric environment have a nonlinear and complex relationship.It is also emphasized the necessity of further analyzing the effects of each pollutant on ozone production.(3)Meteorological Factors,especially relative humidity,average air temperature and maximum air temperature,have a significant effect on ozone concentration,and their effects show seasonal differences.This indicates that the combined effects of various meteorological con-ditions should be fully considered when formulating targeted air quality improvement measures.This study aims at providing important guide to understand the comprehensive nature of urban air pollution and developing effective air quality improvement strategies,as well as offering a reference for atmos-pheric management in other similar areas.
O3spatiotemporal distributioninfluencing factorsHechi City
NETL
NSTL
万方数据
