Long Term Variation Analysis of Satellite-Derived Air Pollution Components Over East China

The long term satellite-derived datasets including AOD, tropospheric NO2 and tropospheric 03 from MODIS, GOME-2 and OMI/MLS, respectively were collected and processed for variation and correlation analysis of major air pollution components over East China. The time series data of three urban regions were plotted and analyzed. The result shows that the AOD and trop NO2 values over the urban regions are much higher than other areas. The trends of AOD and trop 03 over Pearl River Delta, -0.0076/year and 0.2454 DU/year, respectively, are significant at 0.05 level. There is a high and significant negative correlation between trop NO2 and trop 03, and a significant positive correlation between trop 03 and AOD. More study is still ongoing.