MOPITT-based Measurement and Analysis of CO Concentration Before and After Olympic Games in Beijing

Abstract

Abstract:

The concentration distribution of CO in Beijing based on MOPITT data and instrumental dataset was analyzed. The results showed that CO column concentration reflected the contamination level of the territorial air pollution, and near-ground CO mass concentration was mainly due to local air pollution emission. As for the continental background, Waliguan’s CO column concentration was similar to seasonal variations of near-ground mass concentration. CO column concentration reached its peak in spring, but mass concentration near the ground surface was higher during heating period when compared to no-heating period in Beijing. CO column concentration during August of 2000~2008 was increasing in the slow manner but mass concentration near the ground surface was decreasing significantly in Beijing. Air cleaning measures taken during 2008 Beijing Olympic Games considerably reduced about 19.3% column concentration and 46.7% mass concentration of CO due to decreased emission of air pollutants from Beijing and its circumjacent regions. It can be said that the air cleaning measures greatly improved air quality, but the distribution of air pollution is still kept as it is.

Key words: Beijing, Olympic Games, air pollution control measures, MOPITT; CO

CLC Number:

X831

LI Ling-Jun. MOPITT-based Measurement and Analysis of CO Concentration Before and After Olympic Games in Beijing[J]. Journal of Atmospheric and Environmental Optics, 2009, 4(4): 283-289.

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