【摘要】 分析MOD IS数据反演的大气气溶胶光学厚度(AOD)与大气环境污染的关系,结果表明:当空气没有污染时,AOD<0.3;轻度污染时,0.3<AOD<1.0;污染严重时,AOD>1.0。在分析AOD与地面大气污染关系的基础上,结合空气污染指数,将城市光化学污染预警等级分为无、微弱、较弱、较强和强5级,并结合广州市实例进行了验证分析,为进一步建设城市光化学污染预警系统提供基础。更多还原

【Abstract】 There exist increasingly serious and dangerous photochemical smog events in some cities caused by increasing motor vehicles.The prediction and early warning system,however,has not started to work.Therefore,we had better monitor the photochemical smog using remote sensing data and,at the same time,build the early warning system.Studies reveal a distinct positive correlation between aerosol optical depth(AOD) and air pollution monitored by MODIS data.When AOD<0.3, air is clean;when 0.3<AOD<1.0,there exists weak air pollution;and when AOD>1.0,air pollution becomes serious.Based on analyzing the correlation between AOD and air pollution and using data of air pollution monitors and Air pollution Index(API),this paper has divided the early warning system of Urban Photochemical Smog Pollution into five grades: nil,faint,weak,relatively strong and strong,Verification with the example of Guangzhuo has laid the foundation for the application of the Advanced Warning Mechanism System to the Urban Photochemical Smog Pollution.更多还原