MODIS气溶胶光学厚度对城市空气质量的指示

空气污染指数API(Air Pollution Index)是关系大众生产生活的一个重要指标,论证了一种由MODIS(中分辨率成像光谱仪)反演的气溶胶光学厚度产品AOT(Aerosol Optics Thickness)预报空气质量的方法,即依据API的分级标准,将API用特定的步长分组,再把各组的AOT和API均值建立相关模型,并用该模型来预测空气质量指数,经验证,预测值和实际值之间的精度为77.59%,基本达到业务运行的要求。

Urban Air Quality by MODIS AOT Products

As the economy developed,the air condition was worsened accordingly,so the government and the public gave more attention to this problem.API(Air Pollution Index)was a major index which closely related to the livelihood.A method expounded and proved in this paper indicated the air quality by MODIS AOT(Aerosol Optics Thickness)products.According to its grading standard,API was divided into groups with certain step length,and the correlation model with the mean value of AOT and API was built up,then with the method,the value of API may be forecasted.The examination confirmed that the precision of the forecasting and actual value was up to 77.59%,It achieved the demand of normal business working in the main.