| 基于PMF模式的北京大气污染特征分析 |
| |
| 引用本文： | 丁问微,王英,李令军,冯志汉.基于PMF模式的北京大气污染特征分析[J].中央民族大学学报(自然科学版),2010,19(1):5-12. |
| |
| 作者姓名： | 丁问微 王英 李令军 冯志汉 |
| |
| 作者单位： | 1. 中央民族大学,生命与环境科学学院,北京,100081
2. 北京市环境保护监测中心,北京,100044 |
| |
| 摘 要： | 本文利用PMF模型对北京大气污染进行源解析,进一步分析了北京大气污染特征.针对2000~2005年北京大气污染变化趋势,文章选取了3个主因子,分析结果显示:第一主因子代表北京大气燃烧源型污染,主要污染物为NOX、SO2、CO,污染存在明显的季节变化,以秋、冬季较为严重,年际变化大,整体来看,从2000~2005年,燃烧源型污染有减轻的趋势;第二主因子代表地壳源型污染,以极端气候条件下地壳运动产生的大气颗粒物为主,北京春季容易发生沙尘天气,污染最严重,地壳源型污染年际变化复杂,2000~2002年北京沙尘天气频繁发生,地壳源型污染严重,2003年北京沙尘天气少,污染比较轻,2004和2005年,北京地壳源型污染较2000~2002年减轻;第三主因子代表光化学二次污染,主要特征污染物为O3,北京光化学二次污染夏季最严重,年际变化不大.
|
| 关 键 词： | PMF 北京 源解析 大气污染特征 |
The Analysis of Beijing Atmospheric Pollution Characteristics by Positive Matrix Factorization |
| |
| DING Wen-wei,WANG Ying,LI Ling-jun,FENG Zhi-han.The Analysis of Beijing Atmospheric Pollution Characteristics by Positive Matrix Factorization[J].Journal of The Central University for Nationalities(Natural Sciences Edition),2010,19(1):5-12. |
| |
| Authors: | DING Wen-wei WANG Ying LI Ling-jun FENG Zhi-han |
| |
| Institution: | DING Wen-wei~1,WANG Ying~1,LI Ling-jun~2,FENG Zhi-han~1(1.College of Life , Environmental Sciences,Minzu University of China,Beijing 100081,China,2.Beijing Municipal Environmental Monitoring Center,Beijing 100044,China) |
| |
| Abstract: | This study made a source apportionment of Beijing atmospheric pollution by PMF model and focused on Beijing atmospheric pollution characteristics.Three major factors were chosen according to Beijing atmospheric pollution variation trend from 2000 to 2005.The result showed the first factor on behalf of the combustion source pollution,the major pollutants were NO_X,SO_2,CO.The seasonal change of pollution was obvious and getting heavier in fall and winter,the pollution showed a tendency of declining from 2000... |
| |
| Keywords: | PMF |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
