钟明洁,李晓炜,龙霁,江影,SEIPENBUSCH Martin,于明州.关于气溶胶颗粒物沉积率系数平均方法模型的改进研究[J].环境科学学报,2015,35(3):636-640
关于气溶胶颗粒物沉积率系数平均方法模型的改进研究
- Improvement of the averaged method model on the deposition loss rate coefficient
- 基金项目：德国洪堡基金会项目(No.1136169);国家自然科学基金(No.11372299);浙江省自然科学基金(No.Y13E080029);浙江省新苗人才支持计划项目(No.130037)
- SEIPENBUSCH Martin
- Karlsruhe Institute of Technology, Karlsruhe 76131, Germany
- 摘要：气溶胶颗粒物在壁面的沉积率系数模型的研究已经成为现代气溶胶动力学研究的重要课题.本文通过实验腔测量和理论分析相结合,对Koivisto 等(2012) 提出的平均方法模型(AM)中的关键参数(即时间间隔)的选取和对测量数据量的要求两个问题进行研究.选取目前广泛使用的最小二乘法模型(LSM)和Lai 和 Nazaroff (2000) 提出的理论分析模型进行对比.研究发现,AM模型中的时间间隔这一关键参数,应由目前的50矫正为20; AM模型和LSM模型均要求实验测量数据个数等于或者大于10,但是AM模型在小数据量情况下的预测结果更精确.
- Abstract：Characterization of deposition loss rate coefficient of an aerosol is an important topic in aerosol dynamical studies. Based on theoretical analysis and experimental measurement, two critical problems in the Averaged Method (AM) model, the selection of time interval and the requirement for the number of measured data, were investigated. In the study, the widely used Least Square Method (LSM) model and the theoretical model proposed by Lai & Nazaroff (2000) were selected for comparison. It was found that the interval number of the AM should be adjusted from 50 to 20. Both AM and LSM require the number of measurement equal to or larger than 10, but the AM is more accurate when the number of measurement is small.
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