2016年太原市臭氧的时空分布特征

Spatial-temporal characteristics of ozone in Taiyuan,2016

为了了解太原市臭氧的时空分布特征,对2016年太原国控点的臭氧浓度数据进行分析。结果表明,2016年太原市臭氧为首要污染物天数共13天,第90百分位数臭氧8h滑动平均浓度为140μg/m3,未超年均值标准。臭氧月分布呈倒"V"型,平均浓度最高出现在6月。臭氧日变化形状为单峰型,最小与最大浓度分别出现在早上7:00和下午15:00,同时其表现出反"周末效应"。空间分布上,太原臭氧污染最严重的是金胜点和南寨点,其他点差别不明显。

In order to understand the spatial-temporal characteristics of ozone in Taiyuan,the ozone concentration data of Taiyuan National Control Point in 2016 were analyzed.The results show that,in 2016,the days of ozone as the main pollutant in Taiyuan totaled 13 days,and the 90% of O3-8h concentration was 140 ug/m3,which did not exceed the annual average standard.The monthly distribution of ozone was inverted “V”and the highest average concentration appeared in June.The diurnal variation of ozone is a single peak,with the minimum and maximum concentrations occurring at 7:00 am and 15:00 pm.At the same time,the diurnal variation of ozone shows an anti-weekend effect.In terms of spatial distribution,the most serious pollutionof ozone in Taiyuan occurred in Jinsheng and Nanzhai and the difference between other points was not obvious.