SO2 long-term monitoring by satellite in the Pearl River Delta
珠江三角洲地区SO2浓度卫星遥感长时间序列监测

Using the Ozone Monitoring Instrument (OMI) to obtain the long-term SO2 concentration, we analyzed the near-surfaceSO2 concentration variation before the 2010 Asian Games and the space distribution of Pearl River Delta SO2 concentrationduring the period of the 2010 Asian Games. It shows that OMI has the ability of monitoring near-surface SO2 concentration variation.Because of linkage air quality guarantee measures in the Pearl River Delta, during the 2010 Asian games, the air quality ofPearl River Delta is better than historical periods.