摘要
分析了2010年臭氧试点监测数据,结果表明,我国臭氧污染呈现显著的区域分布特征和时间变化特征。南方城市臭氧质量浓度高于北方,超标时间跨度大,全年都可能出现臭氧超标。由于太阳最大辐射值的时间差异,导致东西部城市臭氧最大小时质量浓度值出现时间有差异。城市尺度上,郊区下风向臭氧质量浓度高于城区,且总体污染水平呈上升趋势,存在由城市向下风方向的区域输送,以及臭氧污染与霾污染同步出现的大气复合污染。
The spatio-temporal patterns of ozone in China were analyzed based on the pilot monitoring of ozone in several Chinese megacities.The ozone concentration level in southern cities were higher than northern cities.More hours of higher than the national standard were found in southern cities.Excessive events could be found in nearly all months in southern cities.The moment of ozone max concentration in the eastern cities was before the western cities because of the difference of the max solar radiation.Ozone pollution in the downwind suburban sites was higher than the downtown sites,and risen up annually.The regional transport from downtown to suburban and the ozone-haze combined pollution were found.
出处
《环境监测管理与技术》
2011年第B12期34-39,共6页
The Administration and Technique of Environmental Monitoring
