【摘要】 利用改进的二维欧拉空气质量模式对珠江三角洲地区不同类型人为源排放对该区域臭氧生成的贡献进行了模拟研究.结果表明,珠江三角洲区域臭氧生成受VOCs排放控制,流动源排放VOC最多,对臭氧生成的贡献也最大,分别占臭氧最大小时浓度和平均小时浓度的44%和67%;其次是溶剂和油漆挥发的贡献.点源和面源排放VOC较少,但排放NOx量大,二者对臭氧生成影响是负的.控制所有类型人为源排放,珠江三角洲区域臭氧日均浓度和最大浓度将分别减少78%和90%.模拟结果还显示,受气象场和光化学反应共同影响,珠江三角洲南部区域是臭氧浓度高值区.更多还原

【Abstract】 A modified two-dimensional Eulerian air quality model was used to simulate the contribution ratio of anthropogenic sources to ozone formation in Pearl River Delta region (PRD). The results showed VOCs emissions dominated ozone formation in PRD. Among various sources the mobile source contributed the most to ozone formation, the daily average and the maximum concentrations of mobile source were 44% and 67%, respectively. Followed in proper order by those from oil paints and organic solvents. And effect of point source and area source on ozone formation was negative. If the emission of anthropogenic sources was reduced to zero, the daily average and the maximum concentrations of ozone would decrease by 78% and 90%, respectively. The results also showed that the ozone concentration in PRDR was higher on the leeward side than on the windward side.更多还原