基于卫星数据的灰霾污染遥感监测方法及系统设计

摘要

The relationship between satellite remote sensing parameters and haze pollution indexes was presented. We introduce methods for retrieving haze index and level of air quality index ( AQI ) and illustrate design of the relevant haze monitoring system, based on satellite-derived aerosol optical depth data from the moderate resolution imaging spectroradiometer. It is showed that satellite remote sensing can well represent change of haze pollution levels, discover possible transport paths, and reveal macroscopically spatial distribution of haze pollution. During the survey period, by comparison with in situ AQI of air quality monitoring stations, it is found that about 88% of satellite remote sensing results show uncertainties less than 1 AQI level and the average bias from station measurement is about 0. 7 AQI level, and the reasons of differences between satellite remote sensing and ground monitoring are also discussed.%以中分辨率成像光谱仪为例，建立了卫星遥感参数和空气污染指标之间的联系，提出了基于卫星遥感的气溶胶光学厚度数据获得灰霾指数和灰霾污染时空气质量指数( AQI)等级的方法和相关的监测系统设计。结合在华北地区的监测结果，可以看出卫星遥感可以较好地反映灰霾污染程度的变化，有助于发现可能的传输通道，获得宏观的灰霾空间分布状况。在研究时段内，与地面空气质量监测站相比，88％的卫星遥感监测结果误差不大于1个AQI等级，平均的AQI等级偏差为0.7级，并分析了卫星遥感与地面监测之间差异的原因。