利用卫星OMI(Ozone Monitoring Instrument)数据获得的长时间序列SO₂浓度,分析广州亚运会从申办到成功举办期间珠江三角洲地区近地面SO₂浓度的变化过程,以及亚运会举办期间珠江三角洲SO₂浓度分布状况。结果表明OMI能够反映近地表的SO₂浓度变化趋势,广州亚运会从申办到成功举办期间珠江三角洲地区近地面SO₂浓度表现出明显的季节变化,且亚运会期间该地区近地面SO₂浓度比以往年同期要低,说明珠江三角洲地区联动的空气质量保障措施明显降低了该地区近地面的SO₂浓度。

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.