Fast increasing of surface ozone concentrations in Pearl River Delta characterized by a regional air quality monitoring network during 2006–2011

查看全文 作　　者：Jinfeng [1]Li;Keding [1]Lu;Wei [1]Lv;Jun [1]Li;Liuju [2]Zhong;Yubo [2]Ou;Duohong [2]Chen;Xin [1]Huang;Yuanhang [1]Zhang

机构地区：[1]College of Environmental Sciences Engineering,Peking University;[2]Guangdong Provincial Environmental Monitoring Center

出　　处：《Journal of Environmental Sciences》索引2014年第26卷第1期,共14页

基　　金：supported by the National Natural Science Foundation of China(No.21190052,41121004);the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB05010500);the National Public Benefit Special Fund for Environmental Protection Research(No.201009001-4);the Special Fund of State Key Joint Laboratory of Environment Simulation and Pollution Control(No.13Z02ESPCP) 摘　　要：Based on the observation by a Regional Air Quality Monitoring Network including 16 monitoring stations, temporal and spatial variations of ozone(O3), NO2and total oxidant(Ox) were analyzed by both linear regression and cluster analysis. A fast increase of regional O3concentrations of 0.86 ppbV/yr was found for the annual averaged values from 2006 to 2011 in Guangdong, China. Such fast O3increase is accompanied by a correspondingly fast NOx reduction as indicated by a fast NO2 reduction rate of 0.61 ppbV/yr. Based on a cluster analysis, the monitoring stations were classified into two major categories – rural stations(non-urban) and suburban/urban stations. The O3concentrations at rural stations were relatively conserved while those at suburban/urban stations showed a fast increase rate of 2.0 ppbV/yr accompanied by a NO2 reduction rate of 1.2 ppbV/yr. Moreover, a rapid increase of the averaged O3 concentrations in springtime(13%/yr referred to 2006 level) was observed, which may result from the increase of solar duration, reduction of precipitation in Guangdong and transport from Eastern Central China. Application of smog production algorithm showed that the photochemical O3production is mainly volatile organic compounds(VOC)-controlled. However, the photochemical O3production is sensitive to both NOx and VOC for O3pollution episode. Accordingly, it is expected that a combined NOx and VOC reduction will be helpful for the reduction of the O3 pollution episodes in Pearl River Delta while stringent VOC emission control is in general required for the regional O3 pollution control. 关键词：臭氧浓度珠江三角洲监测网络气质 NOx还原挥发性有机化合物地面排放控制

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Fast increasing of surface ozone concentrations in Pearl River Delta characterized by a regional air quality monitoring network during 2006–2011

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