LI Li,YANG Wenda,LU Sheng,et al.Characteristics of ozone pollution and its relationship with meteorological factors in Jiaxing city[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(02):147-153.
LI Li,YANG Wenda,LU Sheng,et al.Characteristics of ozone pollution and its relationship with meteorological factors in Jiaxing city[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(02):147-153. DOI: 10.13471/j.cnki.acta.snus.2020B097.
Characteristics of ozone pollution and its relationship with meteorological factors in Jiaxing city
) observation data of 14 monitoring stations in Jiaxing city from 2014 to 2018, the characteristics of the temporal variations and spatial distribution of O
3
were analyzed,then the correlation between temperature, humidity and O
3
concentration were discussed. Results indicate that the number of days that the air quality index (AQI) exceeded the standard per year decreased over the past five years. However, the proportion of days that the O
3
exceeded the standard gradually increased, from 43 % in 2014 to 64 % in 2018. O
3
concentration in Jiaxing City had seasonal variations with the order of summer
>
spring
>
autumn
>
winter, and the O
3
pollution mainly occurred between late spring and early autumn. Correspondingly, the number which days of exceeding the O
3
-8h standard from April to September reached 8 days per month or more. Spatially, the O
3
pollution in Jiaxing was mainly distributed in the central and northern areas of the city. At the Qinghe primary school site, the fraction of the 1h-O
3
concentrations that exceeded 200 µg/m
3
was the highest among all stations, and the hourly peak O
3
concentration-area lasted the longest from July to September. The temperature and relative humidity were significantly correlated with ozone concentrations. O
3
concentrations as well as the ratios of exceeding the standard increased significantly when temperature was above 33 ℃ or the relative humidity was lower than 50 %.
关键词
臭氧超标率温度相对湿度嘉兴市
Keywords
ozoneover-standard ratetemperaturerelative humidityJiaxing city
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