大气与环境光学学报, 2010, 5 (6): 414, 网络出版: 2010-12-07  

合肥、岳西气溶胶光学特性的测量与对比分析

Measurement and Analysis of Optical Characteristics of Aerosol in Hefei and Yuexi
作者单位
1 中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室, 安徽 合肥 230031
2 中国科学院研究生院, 北京 100039
摘要
为分析城市型气溶胶对其周边地区的影响,同时为华东地区大气参数的测量积累数据,利用空气动力学粒度 仪和碳黑度仪于2009年10月先后在合肥、岳西两地开展了实验测量。结果表明:两地气溶胶粒子的平均 谱分布服从对数正态分布,合肥地区气溶胶粒子模式直径约为0.710 μm,岳西地区约为0.683 μm。气溶胶粒 子数浓度的日变化和概率统计结果显示,两地气溶胶数浓度都有明显的日变化过程,其中合肥实验数 据中80%的结果分布在200~800/cm3范围内,岳西90%以上集中在100~450/cm3。两地气溶胶 在450 nm、550 nm和700 nm三波长下的吸收系数都有明显的日变化,只是合肥地区吸收系数的量级为10-5,而岳西为10-6。
Abstract
In order to analyze the effect of urban aerosol to marginal areas, and provide data for measurement of atmospheric parameters in Huadong area, experiments are performed in Hefei and Yuexi successively. The main equipments are aerodynamic paticle sizer spectrometer(APS 3321) and aethalometer(AE 31). The characteristic diameter of aerosol in Hefei testing point is 0.710 μm, and 0.683 μm in Yuexi, and the average size of aerosol follows logarithmic normal distribution. Statistic results of total number concentration of aerosol in Hefei and Yuexi show that the diurnal variation is obvious. The probability is larger than 80% when total number concentration in Hefei appears during 200~800/cm3, and 90% during 100~450 /cm3 in Yuexi. In both areas, Absorption coefficients of aerosol at 450 nm, 550 nm and 700 nm have obvious diurnal variation, and the differences are their magnitude. In Hefei, the magnitude of absorption coefficient is 10-5, but 10-6 in Yuexi.

倪志波, 黄印博, 郭凤霞, 黄宏华, 饶瑞中. 合肥、岳西气溶胶光学特性的测量与对比分析[J]. 大气与环境光学学报, 2010, 5(6): 414. NI Zhi-bo, HUANG Yin-bo, GUO Feng-xia, HUANG Hong-hua, RAO Rui-zhong. Measurement and Analysis of Optical Characteristics of Aerosol in Hefei and Yuexi[J]. Journal of Atmospheric and Environmental Optics, 2010, 5(6): 414.

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