1.浙江省嘉兴生态环境监测中心, 浙江 嘉兴 314000
2.暨南大学质谱仪器与大气环境研究所, 广东 广州510632
3.广东省大气污染在线源解析系统工程技术研究中心, 广东 广州 510632
4.嘉善县气象局, 浙江 嘉兴 314000
5.广州禾信仪器股份有限公司, 广东 广州 510530
李莉(1980年生),女;研究方向:环境监测和仪器分析;E-mail:425754445@qq.com
程鹏(1981年生),男;研究方向:大气化学;E-mail: chengp@jnu.edu.cn
纸质出版日期:2022-03-25,
网络出版日期:2021-05-28,
收稿日期:2020-09-21,
录用日期:2020-10-11
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李莉,杨闻达,吕升等.嘉兴市臭氧污染特征及其与气象条件的关系[J].中山大学学报(自然科学版),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.
李莉,杨闻达,吕升等.嘉兴市臭氧污染特征及其与气象条件的关系[J].中山大学学报(自然科学版),2022,61(02):147-153. DOI: 10.13471/j.cnki.acta.snus.2020B097.
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.
利用2014 - 2018年嘉兴市14个监测站的臭氧(O
3
)观测资料,分析了嘉兴市O
3
污染的时间变化趋势和空间分布特征,并讨论了温湿度和O
3
污染的关系。结果表明:嘉兴市近五年来环境空气质量超标天数有所下降,但O
3
超标天数占比却在逐渐升高,从2014年的43%上升到2018年的64%;嘉兴市O
3
浓度夏季
>
春季
>
秋季
>
冬季,O
3
污染主要集中在春末至早秋,4-9月O
3
-8h月度超标天数平均可达到8天以上;嘉兴市O
3
污染主要集中在以市本级为中心的城市中、北部地区,清河小学站的O
3
小时浓度高值(
>
200 µg/m
3
)占比率最高,7-9月高值持续时间最长;温度、相对湿度和O
3
污染的相关性显著,气温高于33℃或相对湿度低于50%时,O
3
浓度及超标率均会显著上升。
Based on the ozone(O
3
) 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 %.
臭氧超标率温度相对湿度嘉兴市
ozoneover-standard ratetemperaturerelative humidityJiaxing city
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