• 关键词：空气污染  尘污染模式

• 基金项目：

• 王淑芳
• 北京大学地球物理系

• 陈家宜
• 北京大学地球物理系

• 李滇林
• 北京市环境保护科学研究所

• 摘要：本文应用经源高、粒径和风速修正的ATDL模式计算烟尘的扩散。通过实测数据与风速的经验关系估算地面扬尘,并且通过资料分析提出在大城市附近有一个不可忽略的本底值存在的设想,从而得到了总尘浓度的计算方法。用此方法计算尘的日平均浓度及月平均浓度,经与实测值比较结果尚好。

• Abstract：In this paper, the ADTL model was modified for source height, particle diameter and wind velocity to calculate the diffusion of soot from chimney. An empirical relation between observed data of raising dusts and wind velocity was adopted to estimate the contributions of surface raising dusts. Based on data analysis, a suggestion in the existance of an unnegligible background dusts near large cities was put forward to develop a new approach for the calculation of total dust concentrations. The results showed a fairly good agreement between calculated and observed daily- and monthly-averaged dust concentrations.

• Key words：air pollution  particle pollution model.

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