抚州市近地面臭氧时空分布特征及气象影响因素分析  

Temporal and Spatial Characteristics of Near-surface Ozone Concentration and Relationships with Meteorological Factors in Fuzhou City

作　　者：谢文韬 易嘉箐 黄聚佳 陈玉婷 魏凌云 吴赟鹏 XIE Wentao;YI Jiaqing;HUANG Jujia;CHEN Yuting;WEI Lingyun;WU Yunpeng(Guangchang Ecological and Environmental Monitoring Station of Fuzhou City,Jiangxi Fuzhou 344900,China)

机构地区：[1]抚州市广昌生态环境监测站,江西抚州344900

出　　处：《新疆环境保护》2025年第1期1-10,共10页XINJIANG ENVIRONMENTAL PROTECTION

摘　　要：利用2018—2022年国控站点和县区环境空气质量监测站点数据及气象观测数据,分析抚州市近地面O_(3)浓度在时间和空间上的分布特征及其与气象条件的关系。结果表明:2018—2022年抚州市O_(3)-8 h浓度主要分布在50~130μg/m^(3)范围,2019年O_(3)-8 h-90 per浓度水平最高,但5年间年际浓度总体变化趋势不明显。O_(3)浓度具有典型的季节变化特征:秋季>夏季>春季>冬季,O_(3)污染主要发生在秋季。月变化呈双峰型,4—5月和9—10月是O_(3)污染的高发期。O_(3)浓度日变化呈单峰形,通常在每日15时左右达到峰值,超标时刻多数分布在秋季12时~18时。抚州市O_(3)-8 h浓度在空间分布上总体呈“中部—西北部高、南部—东北部低”特征,临川区、崇仁县、南城县浓度较高,广昌县浓度最低。O_(3)-8 h浓度与不同气象因子相关显著,当日均相对湿度为53.2%~71.3%、日照时数为5.2~6.9 h、气温为20.7~30.8℃、气压为984.5~1011.6 hPa、风速为1.5~4.0 m/s,且主导风向为NNE或NE、N时,易形成O_(3)污染。结果可为抚州地区臭氧污染成因与来源解析、大气污染防治提供参考。Based on the data from national control sites and county-level environmental air quality monitoring stations in Fuzhou City from 2018 to 2022,as well as meteorological observation data,the temporal and spatial distribution characteristics of near-surface O_(3) concentration in Fuzhou City and its relationship with meteorological conditions were analyzed.The results indicated that the O_(3)-8 h concentration in Fuzhou City predominantly ranged from 50 to 130μg/m,with the highest O_(3)-8 h-90 per concentration level observed in 2019,though the overall trend of annual concentration changes was not significant over the five years.It had seasonal variation characteristics that the highest O_(3)-8 h levels in autumn,followed by summer,spring,and winter,and O_(3)-8 h exceedances predominantly occur in autumn.The monthly variations manifested a bimodal pattern,with April-May and September-October being the high incidence periods of O_(3) pollution in Fuzhou City.The diurnal variation of O_(3) concentration manifested a unimodal pattern,usually peaking around 15:00 daily,with most exceedance times occurring between 12:00 and 18:00 in autumn.Spatially,higher O_(3)-8 h concentrations in the central-northwestern regions and lower concentrations in the southern-northeastern areas.Notably,Linchuan District in the northwest exhibited the highest ozone levels,followed by Chongren County and Nancheng County in the central part,and Guanchang County in the south having the lowest concentration.The O_(3)-8 h concentration was significantly correlated with various meteorological factors,with O_(3) pollution likely to couse when the daily average relative humidity was 53.2%~71.3%,sunshine hours were 5.2~6.9 h,temperature was 20.7~30.8℃,pressure was 984.5~1011.6 hPa,wind speed was 1.5~4.0 m/s,and the dominant wind direction was NNE,NE,or N.These results could provideed valuable insights into the spatial and temporal dynamics of ozone pollution in Fuzhou City,offering implications for understanding its sources and implementing effect

关 键 词：臭氧 时空分布 气象条件 抚州市 

分 类 号：X515[环境科学与工程—环境工程]