Change of NO2 column density over Beijing from satellite measurement during the Beijing 2008 Olympic Games
Change of NO2 column density over Beijing from satellite measurement during the Beijing 2008 Olympic Games
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DOI：
10.1007/s11434-009-0375-0
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发表时间：
2010
影响因子：
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通讯作者：
Hua Yu;Pucai C. Wang;Xuemei Zong;Xin Li;Daren Lü
中科院分区：
文献类型：
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作者：
Hua Yu;Pucai C. Wang;Xuemei Zong;Xin Li;Daren Lü
利用AURA卫星臭氧监测仪获取的对流层NO2柱密度数据，对北京2008年奥运会空气质量保障措施在降低奥运会期间大气污染方面的效果进行了评估。评价的基本方法是将北京地区赛期NO2柱密度与2005-2007年同期的NO2柱密度进行比较，并与北京与天津、唐山等近几年大气NO2污染状况相近的城市进行比较。2008年北京奥运会期间中国北部地区对流层NO2柱密度的图像显示了空气质量保障措施对降低NO2污染的显著效果：北京的对流层NO2柱密度远低于天津和唐山，而近三年同期三个大城市的对流层NO2柱密度非常接近。2008年7-8月是北京奥运会空气质量保障措施的关键时期，北京地区对流层NO2柱密度下降了约40%。
The effect of the air quality ensuring measures for the Beijing 2008 Olympic Games in reducing air pollution during the game period is assessed using the tropospheric NO2column density retrieved from Ozone Monitoring Instrument onboard AURA satellite. The basic method of the assessment is the comparison of the NO2column densities during the game period with that during the corresponding period of 2005–2007 for the Beijing area, and the comparison among Beijing and neighbouring cities Tianjin and Tangshan, which are of similar situation in air pollution of NO2in recent years. The images of tropospheric NO2column densities over Northern China during the Beijing 2008 Olympic Games show the remarkable effect of the air quality ensuring measures in reducing NO2pollution: the tropospheric NO2column density in Beijing is much lower than that in Tianjin and Tangshan, while there were very similar values in the three large cities during the same period of the last three years. About 40% reduction in tropospheric NO2column density over the Beijing area is obtained from the assessment during July to August, 2008, a key period of air quality ensuring measures for the Beijing 2008 Olympic Games.