基于卫星遥感数据(AOD)估算PM_(2.5)的研究进展

Advance in Ground-level PM_(2.5) Prediction Using Remote Sensing data(AOD)

雾霾天气的频繁出现,不断向人们警示中国大气环境污染的严重性。细颗粒物PM2.5作为空气质量评价指标之一,由于粒径小、为有毒性物质提供载体的特性,对人们的健康和生活产生很大的负面影响。近年来,PM2.5的相关研究引起了世界各国研究者的广泛关注,通过地基手段获得PM2.5质量浓度受到环境、地理等因素的限制,而利用卫星遥感技术估算地面PM2.5质量浓度,覆盖面广、估算精度可靠,对环境污染监测和治理具有重要意义。在综合了国内外关于气溶胶光学厚度(AOD)估算PM2.5文献的基础上,对AOD和PM2.5的数据源和估算的方法及手段作了简要介绍,分析总结了AOD与PM2.5相关性与PM2.5遥感估算的模型,并展望了未来PM2.5研究的发展方向。

The fast development of economy has caused the rapid growth of energy consumption,and the haze weather has been appeared frequently,which urge people to know that the air pollution is very serious. As one of the important indicators of air quality,PM2.5 has negative effect on our health and life seriously,because of its small size and other characteristics which can carry toxic substances,so PM2.5 has attracted wide attention by researchers around the world in recent years. Traditionally,the measure equipment of a central ground monitor has been used to estimate PM2.5 mass concentration,researchers assigned these measurement to populations within a specified distance of the monitor. The ground monitor is limited by factors such as environment and geography. On the contrary,there is of great significance for the environmental pollution monitoring and management to estimate ground- level PM2.5 mass concentration using aerosol optical depth( AOD) of remote sensing data,because remote sensing data can cover research area and has high accuracy which has been proved by many studies. Based on the previous studies of the domestic and foreign published,this paper will make a brief introduction about PM2.5 and AOD of data source and estimating methods. At the same time,the correlation between PM2.5 and AOD,and the research progress of estimating models are summarized.Last,the question and future development about PM2.5 research is also discussed.