大阅兵期间北京市大气质量改善效果评估

发布时间：2018-11-16 13:44

【摘要】：为了评估抗战纪念活动期间污染物减排措施对北京市空气质量的影响,利用2015年8月1日~2015年9月18日北京市大气污染物浓度数据,以及2014年同期监测数据进行对比分析.结果表明:减排期间(2015年8月20日~2015年9月3日)北京市PM_(2.5),SO_2,NO_2和CO浓度均值为17.05μg/m~3,2.35μg/m~3,21.04μg/m~3和0.56mg/m~3,对比减排前期,各污染物分别下降了71.26%,36.49%,37.92%和37.78%,减排后期,随着减排措施的取消,大气污染物反弹上升.与2014年同期相比,减排期间污染物浓度分别下降了73.59%,56.64%,52.39%和38.46%,大气质量改善效果显著.3个时段(减排期间,活动当天和2014年同期)污染物浓度日变化特征相似,整体上呈现2014年同期减排期间活动当天的特征.空间分布上,各站点污染物浓度均远低于2014年同期水平,其中PM_(2.5)降幅大且空间差异较小,SO_2在空间上差异最为明显,不同站点的PM_(2.5)降幅在68.91%~77.63%之间,SO_2降幅在7.43%~74.75%之间,NO_2降幅在34.60%~72.28%之间,CO降幅在24.98%~63.73%之间.减排期间北京市PM_(2.5),SO_2,NO_2和CO浓度分别比周边城市均值低24.66%,81.00%,27.30%和36.36%,也从另一方面反映出减排措施的明显效果.
[Abstract]:In order to evaluate the impact of pollutant emission reduction measures on air quality in Beijing during the commemoration of Anti-Japanese War, the air pollutant concentration data from August 1, 2015 to September 18, 2015, and the monitoring data for the same period in 2014 were compared and analyzed. The results showed that during the emission reduction period (Aug. 20, 2015 to Sept. 3, 2015), the average concentration of SO_2,NO_2 and CO in Beijing was 17.05 渭 g / m ~ (3) 渭 g / m ~ (-1) 2.35 渭 g / m ~ (3) 渭 g / m ~ (3) and 0.56 mg / m ~ (3) g/m~3, respectively. The pollutants decreased by 71.26% and 37.78%, respectively. In the later stage of emission reduction, the atmospheric pollutants rebounded and increased with the cancellation of emission reduction measures. Compared with the same period in 2014, the concentration of pollutants in the emission reduction period decreased by 73.59% and 56.64%, respectively, and the effect of air quality improvement was remarkable. The diurnal variation of pollutant concentration is similar to that of the same period in 2014, showing the characteristics of the activity day during the same period of emission reduction in the same period of 2014. In spatial distribution, the concentration of pollutants in each station was much lower than that in the same period of 2014, in which PM_ (2.5) decreased greatly and the spatial difference was small, and the spatial difference of SO_2 was the most obvious. PM_ (2.5) of different sites decreased by between 68.91 and 77.63 percent, SO_2 between 7.43 and 74.75 percent, NO_2 between 34.60 and 72.28 percent, and CO between 24.98 and 63.73 percent. During the emission reduction period, the concentrations of PM_ (2.5), SO_2,NO_2 and CO in Beijing were 24.660.81.00% and 36.3636% lower than the average of the surrounding cities, respectively, which also reflected the obvious effect of the emission reduction measures.
【作者单位】：南京信息工程大学中国气象局气溶胶与云降水重点开放实验室;南京信息工程大学大气物理学院;南京信息工程大学环境科学与工程学院江苏省大气环境与装备技术协同创新中心;北京市环境保护监测中心;
【分类号】：X51

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