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

doi:10.7523/j.issn.2095-6134.2010.1.002

摘要/Abstract

摘要：

将NASA MODIS气溶胶光学厚度产品AOT与北京市清华园PM_2.5质量浓度进行比较分析.研究表明,AOT和PM_2.5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PM_2.5具有较高的相关性.因此,MODIS AOT可以作为监测PM_2.5分布以及传输的有效补充手段.

关键词: 气溶胶光学厚度, PM_2.5, 空气质量, 北京

Abstract:

The AOT (aerosol optical thickness) data, retrieved by the MODIS on Terra satellite, were compared with PM_2.5 mass concentration at Tsinghua University. It was shown that both AOT and PM_2.5 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 PM_2.5. The present study suggests that MODIS AOT is an effective means for monitoring PM air quality.

Key words: AOT, PM_2.5, air quality, Beijing

中图分类号:

P407.1
X513

王静, 杨复沫, 王鼎益, 贺克斌. 北京市MODIS气溶胶光学厚度和PM_2.5质量浓度的特征及其相关性[J]. 中国科学院大学学报, 2010, 27(1): 10-16.

WANG Jing, YANG Fu-Mo, WANG Ding-Yi, HE Ke-Bin. Characteristics and relationship of aerosol optical thickness and PM_2.5 concentration over Beijing[J]. , 2010, 27(1): 10-16.

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