摘要
利用2015—2020年南宁市近地面臭氧监测数据及气象观测数据,分析南宁市近地面臭氧质量浓度时间变化特征及超标情况,并采用相关分析等统计方法研究臭氧与气象因素的关系。结果表明,南宁市第90百分位O3-8 h质量浓度呈逐年增高趋势。O3月平均质量浓度呈现双峰型变化,峰值出现在4—5月和8—10月。南宁市O3质量浓度与日照时数、最高气温、相对湿度的相关性高。南宁市O3超标以轻度污染为主。O3超标时日平均气温为12.3~31.4℃,最高气温为20.9~37.7℃,相对湿度为46%~88%,日平均风速为0.7~3.4 m·s^(-1),气压为980.3~1011.7 hPa。
Based on the monitoring data of near-surface ozone and meteorological observation data in Nanning city from 2015 to 2020,the variation characteristics of near-surface ozone concentration and its exceedance were analyzed,and the relationship between ozone and meteorological factors was also studied by using statistical methods such as correlation analysis.The results showed that the 90th percentile O3-8h mass concentration in Nanning showed an increasing trend.The monthly mean mass concentration of O3 showed a bimodal change,with peaks appearing in April—May and from August—October.The correlation between O3 mass concentration and sunshine duration,maximum temperature and relative humidity in Nanning was high.The excessive ozore in Nanning was mainly manifested as mild pollution.When O3 exceeded the standard,the average daily temperature varied from 12.3℃to 31.4℃,the maximum temperature from 20.9℃to 37.7℃,the relative humidity from 46%to 88%,and the average daily wind speed from 0.7 m·s^(-1)to 3.4 m·s^(-1).The pressure ranged from 980.3 hPa to 1011.7 hPa.
作者
廖国莲
何启玄
莫雨淳
王义耕
覃海润
LIAO Guolian;HE Qixuan;MO Yuchun;WANG Yigeng;QIN Hairun(Guangxi Meteorological Observatory,Nanning 530022,China;Beihai Meteorological Bureau,Guangxi Beihai 536000,China)
出处
《气象研究与应用》
2023年第3期67-71,共5页
Journal of Meteorological Research and Application
基金
广西气象科研计划项目(桂气科2020Z04)
中国气象局预报员专项(CMAYBY2020-097)
广西气象局创新团队项目。
关键词
臭氧
气象因素
变化特征
南宁
ozone
meteorological factors
variation characteristics
Nanning
