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• 基金项目：

• 杨锦德
• 中国科学院大气物理研究所

• 雷孝恩
• 中国科学院大气物理研究所

• 摘要：应用320米塔上第一次获得的垂直风速脉动量的垂直分布资料,根据湍流扩散统计理论并结合半经验近似,讨论由欧拉参数估算边界层下层扩散参数的主要方法,得到了湍流统计特征量K_z、σ_w及ε随高度和稳定度变化的经验关系,为北京地区大气扩散规律研究及污染模式的建立提供实验基础.

• Abstract：By using vertical distribution data for vertical velocity fluctuations obtained for the first time on the 320-meter tower, and on the basis of the statistical theory of turbulent diffusion and in combination with the semiem-pirical approximation, the main methods of estimating diffusion parameters for the lower part of boundary layers in terms of the Eulerian parameter are discussed. The empirical relationships of the turbulent statiatical characteristics K_π,σ_w, and ε varying with height and stability have been obtained. The results can be applied as the experimental basis to research for atmospheric diffusion as well as in establishment of the pollution model around the Beijing area.

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