G20峰会期间杭州及周边地区空气质量的演变与评估

发布时间：2018-03-03 15:15

  本文选题：G峰会　切入点：杭州　出处：《中国环境科学》2017年06期 　论文类型：期刊论文

【摘要】：为了研究G20峰会期间杭州市及其周边地区大气质量状况,评估保障措施的实施对空气质量的影响,利用2016年8月24日-2016年9月6日杭州及其周边城市空气质量监测数据,分析其时空分布特征,并与2015年同期数据进行比较.结果显示:(1)2016年8月24日-9月6日即会期保障阶段,杭州市PM_(2.5),PM_(10),SO_2,NO_2,CO和O_3浓度均值为31.52μg/m~3,46.55μg/m~3,8.92μg/m~3,15.22μg/m~3,0.62mg/m~3和113.98μg/m~3.(2)与2015年同期相比,会议保障阶段杭州市PM_(2.5),PM_(10),SO_2,NO_2和CO浓度分别下降了40.16%,37.71%,25.98%,56.30%和30.34%,O_3浓度则上升了19.89%.(3)2016年会期保障阶段,2015年同期和G20峰会举办期间的3个时段,污染物日变化特征相似,除O_3外,其他污染物整体上呈现2015年同期2016年会期保障阶段G20峰会举办期间的特点.(4)空间上而言,会期保障阶段O_3浓度在空间上表现出显著上升,其他污染物浓度同比有明显下降,其中PM_(2.5)和PM_(10)在空间上的差异较小,而SO_2和NO_2在空间上的差异较大.(5)G20峰会期间采取的保障措施确保了杭州市及其周边地区大气质量得到了改善.
[Abstract]:In order to study the situation of air quality in Hangzhou and its surrounding areas during the G20 summit and to assess the impact of the implementation of safeguard measures on air quality, the air quality monitoring data of Hangzhou and its surrounding cities from August 24th 2016 to September 6th 2016 were used. The temporal and spatial distribution characteristics are analyzed and compared with the corresponding data of 2015. The results show that: 1) from August 24th 2016 to September 6th, during the sessional guarantee phase, in Hangzhou City, the average concentrations of PM / M / M / P / M / 10 / 10 / S / C / C / CO and O _ 3 are 31.52 渭 g / m ~ 36.55 渭 g / m ~ 38.92 渭 g / m ~ 315.22 渭 g / m ~ 30.62 渭 g / m ~ (3) and 113.98 渭 g / m ~ (3) / g / m ~ (3) ~ (2) respectively) compared with the same period of 2015, and the results show that the mean value of the concentration of O _ (3) and O _ (3) is 31.52 渭 g / m ~ (36.55 渭 g / m ~ (-1)). At the meeting guarantee stage, the levels of PM2NO2 and CO have dropped by 40.16, 37.71, 25.98, 56.30% and 30.34, respectively, and the three periods during the same period of 2015 and during the G20 summit are similar in terms of the characteristics of daily variation of pollutants, with the exception of O3, in the three periods during the same period of 2015 and the holding of the G20 Summit, and the three periods during the same period of 2015 and the G20 summit, with the exception of O3, are similar to each other. Other pollutants as a whole show the characteristics of the G20 summit held in the same period in 2015.) in space, the concentration of O3 in the in-session guarantee phase has shown a marked increase in space, while the concentration of other pollutants has decreased significantly compared with the same period last year. The difference between SO_2 and NO_2 in space is relatively small, and the safeguard measures taken during the G20 summit between SO_2 and NO_2 ensure the improvement of air quality in Hangzhou and its surrounding areas.
【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;
【基金】：国家自然科学基金面上项目(41475108)
【分类号】：X823
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本文编号：1561562