豫北“盆地”型城市臭氧污染与气象的关系特征研究——以林州市为例

Study on the relationship between ozone pollution and meteorology in"basin"cities in Northern He′nan Province:A case study of Linzhou City

基于2019—2021年林州市O_(3)的浓度监测数据和气象资料,分析了林州市的O_(3)污染特征及气象因子对O_(3)污染的影响。结果表明,林州市O_(3)月均浓度年变化呈“单峰”型,最大值出现在6月,最小值出现在12月,超标日主要集中在春末、夏季、秋初。O_(3)浓度与气温呈正相关性,当温度超过25℃,尤其是温度大于30℃时,容易出现O_(3)污染;当湿度在50%~60%时,超标率最高;偏南风、东北风以及风速较小时,O_(3)易出现高值。

Based on the monitoring data and meteorological data of O3 concentration in Linzhou City from 2019 to 2021,the characteristics of O3 pollution in Linzhou City and the influence of meteorological factors on O3 pollution were analyzed.The results show that the annual variation of the monthly mean concentration of O3 in Linzhou City presents a"unimodal"pattern,with the maximum value appearing in June and the minimum value in December,and the days exceeding the standard are mainly concentrated in late spring,summer and early autumn.O3 concentration is positively correlated with air temperature.When the temperature is higher than 25°C,especially when the tempera⁃ture is higher than 30°C,O3 pollution is likely to occur.When the humidity is in the range of 50%~60%,the exceed⁃ance rate is the highest.When the wind is south,southwest,southeast or northeast,and when the wind speed is small,O3 is prone to high value.