广东省大气污染典型案例特征及其影响因素分析

发布时间：2018-01-02 21:31

本文关键词：广东省大气污染典型案例特征及其影响因素分析?　出处：《安全与环境工程》2017年02期 　论文类型：期刊论文

【摘要】：基于广东省空气质量监测和天气形势及气象观测数据,分析了2015年广东省典型大气污染案例中的空气质量污染特征,识别了主导天气形势及气象特征,并结合后向轨迹聚类分析,初步探讨了空气污染与气团来源的关系。结果表明:2015年全省共发生13次大气污染事件,呈现冬季(12~2月)主要为高浓度PM_(2.5)污染、春夏秋季(4~10月)高浓度O_3污染事件时有发生的时间特征和重污染区集中于珠三角地区的空间特征;从主导天气形势看,广东省大气污染事件可分为高压出海型、热带低压型、弱槽弱脊型和高压控制型4个类型;通过典型地区后向轨迹聚类分析,发现偏南和偏北方向的污染气团输送与珠三角地区O_3污染关系密切相关,东南和偏西方向的污染气团对PM_(2.5)污染有重要影响。该研究对本地区大气污染演变趋势预测和污染防治具有重要的参考意义。
[Abstract]:Based on the data of air quality monitoring, weather situation and meteorological observation in Guangdong Province, the characteristics of air quality pollution in typical cases of air pollution in Guangdong Province in 2015 were analyzed, and the dominant weather situation and meteorological characteristics were identified. The relationship between air pollution and the source of air mass was preliminarily discussed based on the cluster analysis of backward trajectory. The results showed that there were 13 air pollution events in the province in 2015. (12 ~ February) the main pollution is high concentration PMSP (2.5) pollution. (4 ~ October in spring and summer)) the time characteristics of high concentration OSP _ 3 pollution events and the spatial characteristics of heavily polluted areas concentrated in the Pearl River Delta region; According to the dominant weather situation, air pollution events in Guangdong Province can be divided into four types: high pressure type, tropical low type, weak trough type and low ridge type and high pressure control type. Based on the cluster analysis of the typical area, it is found that the air mass transport in the south and north direction is closely related to the pollution of O _ S _ 3 in the Pearl River Delta region. The polluted air mass in the southeast and westward direction has an important influence on the PMS2.5) pollution. This study has important reference significance for the prediction of the evolution trend of air pollution in this area and the pollution prevention and control.
【作者单位】：广东省环境监测中心;国家环境保护区域空气质量监测重点实验室;广东省环境保护大气二次污染研究重点实验室;
【基金】：国家科技支撑计划项目(2014BAC21B01、2014BAC21B03) 环保公益性行业科研专项项目(201409009)
【分类号】：X51
【正文快照】： 近年来,随着广东省各城市规模迅速扩大与现代化进程的日益加快,大气污染物超强度集中式排放,结合独特的地形环境和气象条件,大气污染物相互交叉和耦合、相互输送和叠加,形成了区域性复合型大气污染格局,主要表现为以臭氧(O3)为特征的光化学烟雾污染和以细颗粒物(PM2.5)为特征

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