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中国科学院大学学报 ›› 2010, Vol. 27 ›› Issue (1): 10-16.DOI: 10.7523/j.issn.2095-6134.2010.1.002

• 论文 • 上一篇    下一篇

北京市MODIS气溶胶光学厚度和PM2.5质量浓度的特征及其相关性

王静1, 杨复沫1, 王鼎益2, 贺克斌3   

  1. 1. 中国科学院研究生院地球科学学院,北京 100049;;
    2. 纽布朗什维克大学物理系, 弗雷德里克顿,NB E;
    3. 清华大学环境科学与工程系,北京 100084
  • 收稿日期:2009-03-23 修回日期:2009-06-12 发布日期:2010-01-15
  • 通讯作者: 杨复沫
  • 基金资助:

    国家自然科学基金项目(40675079)和中国科学院研究生院院长基金项目资助 

Characteristics and relationship of aerosol optical thickness and PM2.5 concentration over Beijing

WANG Jing1, YANG Fu-Mo1, WANG Ding-Yi2, HE Ke-Bin3   

  1. 1. College of Earth Sciences, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China;
    2. Department of Physics, University of New Brunswick, Fredericton, NB E;
    3. B 5A3, Canada; 3 Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2009-03-23 Revised:2009-06-12 Published:2010-01-15

摘要:

将NASA MODIS气溶胶光学厚度产品AOT与北京市清华园PM2.5质量浓度进行比较分析.研究表明,AOT和PM2.5均有明显的季节性变化特征;二者的日均值相关性在冬半年要明显低于夏半年,说明二者受到季节的显著影响.利用相对湿度和气溶胶标高等气象条件进行校正后,AOT与PM2.5具有较高的相关性.因此,MODIS AOT可以作为监测PM2.5分布以及传输的有效补充手段.

关键词: 气溶胶光学厚度, PM2.5, 空气质量, 北京

Abstract:

The AOT (aerosol optical thickness) data, retrieved by the MODIS on Terra satellite, were compared with PM2.5 mass concentration at Tsinghua University. It was shown that both AOT and PM2.5 had obviously seasonal-change character, and the linear correlation coefficient between them was better in summer than in winter. After modifying weather conditions, such as RH and aerosol elevation, we always found a high correlation coefficient between AOT and PM2.5. The present study suggests that MODIS AOT is an effective means for monitoring PM air quality.

Key words: AOT, PM2.5, air quality, Beijing

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