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| 广州市PM2.5质量浓度垂直分布在线监测研究 |
| On line Monitoring Study on the Vertical Distribution of PM2.5 Concentration in Guangzhou |
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| DOI： |
| 中文关键词: PM2.5 垂直分布 在线监测 激光雷达 消光系数 广州塔 |
| 英文关键词: PM2.5 Vertical distribution On line monitoring Lidar Extinction coefficient Canton Tower |
| 基金项目:广州市科技计划基金资助项目（201604020006）；广州市环保局污染防治新技术新工艺开发“广州市典型污染季节大气细粒子浓度垂直变化规律及其演化特征”基金资助项目 |
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| 中文摘要: |
| 广州塔空气质量自动监测站在地面至高空500 m高度内布设了4个站点。在自动站内利用PM2.5质量浓度点式在线监测和激光雷达消光系数遥感监测技术，实现对PM2.5质量浓度垂直分布的在线监测，监测方法具有很高的时间分辨率和空间分辨率。利用该方法开展阶段性监测表明：PM2.5质量浓度与355 nm消光系数间具有很好的线性关系，R2达到0.853 7，利用线性关系式可反演PM2.5质量浓度。对200 m～550 m间反演结果分析表明：反演结果与在线监测数据具有很好的相关性，相关系数达到0.868以上；PM2.5质量浓度随着高度改变呈显著的对数相关关系，R2达到0.992 6。 |
| 英文摘要: |
| Four automatic monitoring stations were laid on the Canton Tower from the ground to 500 m high. The vertical distribution of PM2.5 concentration was monitored by point mode on line monitoring technology and remote sensing monitoring technology of Lidar extinction coefficient. This method had good time and spatial resolution. The primarily monitoring results showed that the relationship between PM2.5 concentration and the extinction coefficient at 355 nm was linear, R2 was 0.853 7, indicating it could be used to inverse PM2.5 concentration through the extinction coefficient. There was good correlation between the inversion results and the on line monitoring data at the height from 200 m to 550 m, the correlation coefficient was over 0.868. PM2.5 concentration had good logarithmic correlation with the variation of altitude and R2 reached to 0.992 6. |
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