基于MOPITT数据的北京奥运前后CO监测分析

大气与环境光学学报 ›› 2009, Vol. 4 ›› Issue (4): 283-289.

基于MOPITT数据的北京奥运前后CO监测分析

李令军

北京市环境保护监测中心, 北京 100048

收稿日期:2009-04-08 修回日期:2009-05-25 出版日期:2009-07-28 发布日期:2009-07-24
通讯作者: 李令军 (1976-) 男，山东莒县人，北京市环境保护监测中心高级工程师，主要从事大气污染监测与研究工作。 E-mail:lilingjun@bjmemc.com.cn
作者简介:李令军 (1976-) 男，山东莒县人，北京市环境保护监测中心高级工程师，主要从事大气污染监测与研究工作。

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

LI Ling-Jun

Beijing Municipal Environmental Monitoring Center，Beijing 100048, China

Received:2009-04-08 Revised:2009-05-25 Published:2009-07-28 Online:2009-07-24

摘要/Abstract

摘要：

利用MOPITT卫星资料及近地面监测数据，研究了奥运前后北京大气CO柱浓度及近地面质量浓度的分布及变化规律。发现：CO柱浓度反映了区域大气污染水平，而其近地面质量浓度主要受局地污染源排放的影响。大陆背景点瓦里关站CO柱浓度与近地面质量浓度季节变化较为相似，都以春季最高；而北京CO柱浓度与近地面质量浓度季节变化差异较大，CO柱浓度以春季最高，而近地面质量浓度采暖期明显高于非采暖期。2000～2007年8月北京大气CO柱浓度缓慢升高，而其近地面质量浓度呈显著下降趋势。2008年受奥运空气质量保障措施的影响，北京及周边五省市CO排放显著减少，大气中CO柱浓度及近地面质量浓度同时大幅度降低。北京CO柱浓度下降19.3%，而近地面浓度更是下降了46.7%。北京CO近地面质量浓度下降幅度更大，主要源于北京较周边省市采取了更大力度的空气质量保障措施。空气质量保障措施极大地减少了CO的总量排放，但未改变区域大气污染分布格局。

关键词: 北京, 奥运会, 污染控制措施, MOPITT, CO

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

中图分类号:

X831

李令军. 基于MOPITT数据的北京奥运前后CO监测分析[J]. 大气与环境光学学报, 2009, 4(4): 283-289.

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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