Transport of airborne particulate matters originating from Mentougou, Beijing, China

China Particuology Pub Date : 2007-12-01 DOI:10.1016/j.cpart.2007.07.003

Duoxing Yang , Yongwei Han , Jixi Gao , Jesse Thé

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引用次数: 3

Abstract

In this study, a coupled regional air quality modeling system is applied to investigate the time spatial variations in airborne particulate matters (PM₁₀), originating from Mentougou to Beijing municipal area in the period of April 1–7, 2004, and the influences of complex terrain and meteorological conditions upon boundary layer structure and PM₁₀ concentration distributions. An intercomparison of the performance with CALPUFF against the observed data is presented and an examination of scatter plots is provided. The statistics show that the correlation coefficient and STD between the modeled and observed data are 0.86 and 0.03, respectively. Analysis of model results illustrates that the pollutants emitted from Mentougou can be transported to Beijing municipal area along certain transport pathways, and PM₁₀ concentration distributions show heterogeneity characteristics. Contributions of the Mentougou sources to the PM₁₀ concentrations in Beijing municipal area are up to 0.1–15 μg/m³.

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源自北京门头沟的空气颗粒物的输送

利用区域空气质量耦合模拟系统，研究了2004年4月1-7日门头沟至北京市区大气颗粒物(PM10)的时空变化特征，以及复杂地形和气象条件对边界层结构和PM10浓度分布的影响。将CALPUFF的性能与观测数据进行了相互比较，并对散点图进行了检查。统计结果表明，模型与观测数据的相关系数和STD分别为0.86和0.03。模型结果分析表明，门头沟排放的污染物可沿一定的输送路径向北京市区输送，且PM10浓度分布呈现非均匀性特征。门头沟污染源对北京市区PM10浓度的贡献达0.1 ~ 15 μg/m3。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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China Particuology

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