Study On The Effects Of Inland Dust On The Particulate Pollution Of Mid-Eastern China Based On RS Technology

In recent years, urban particulate matter has become the main aspect in environment monitoring and treatment. The source of urban particulate matter in China is complex, biomass burning; building construction dust, etc are the main sources of it. But with the frequent occurrence of sandstorm in recent years, the inland dust has become an important source of particulate matter in some cities of China. When the sandstorm and blowing sand weather happened, the strong wind blows massive sand dust into air and causes serious air pollution. Some dust rolled up into upper atmosphere and then transmitted distance with the airflow, so the sand dust can effect the air pollution in large-scale regions. So find the correlation between the inner dust and the particulate pollution of Mid-Eastern is significant for the environmental pollution control.The traditional method of monitor particulate matter is foundation exploration, high precision and plentiful indices are the advantages of it. But it cannot reflect the temporal-spatial distribution of the particulate matter in a large range, so it has a lot of limit in finding the source origin and influence scope of the particulate matter. Satellite remote sensing technology has the characteristics of large scope of coverage, convenient and fast in information acquisition. Using this method we can get the origin, spatial distribution, moving track and drop region of dust, and make the monitor results continuous, both in temporal and spatial. So compare the foundation exploration, satellite remote sensing technology can get the macroscopic information of particulate matter more efficient and realize dynamic monitoring.In this paper we use the"Strong-sandstorm sequences and supporting dataset of China"(SSDC, 1982 to 2007), Air Pollution Index (API) of cities, MODIS aerosol optical thickness (AOT) product data and Aerosol Robotic Net-work (AERONET) data to analysis the influence of the west sand dust on the urban particulate matter pollution of Mid-eastern china, and we chose Beijing, Qingdao and Xian as the representative areas. The whole text describes through six parts.PartⅠ: This part mainly introduces the current research situation both home and abroad, and presents the mainly research content of this paper and the general situation of the study regions.PartⅡ: This part introduces the distributing of the west dust source region and the transmission path of the dust, and uses the SSDC to analysis the dust sources of the Mid-eastern China, then finds the west dust effect on the Mid-eastern China and the temporal-spatial distribution of the effect. And Using MODIS-NDVI products to analysis the effect of vegetation cover on the sand-dust storm transmission.PartⅢ:Using SSDC to get the dust index, and using the MODIS MOD04 and AERONET data to get the AOT, finding the correlation between the dust index and AOT, then we can obtain the response mechanism of the AOT to the west dust.PartⅣ: Using MODIS MOD04, AERONET to extract ?ngstr?m wavelength exponentαto analysis the change of the particulate composition in spring of the three cities, and then using the analysis results to compare the west dust and the cities API in the same time to find the contribution of the west dust to the particulate and the API of the Mid-eastern China.PartⅤ: In this part we use MODIS to monitor and analysis two sand-dust processes dynamically to validate the effect of the west sand-dust to the Mid-eastern China.PartⅥ: This part makes a summary over the whole paper and gets the conclusion of the analysis, then puts forward the issues the further research prospect in future.