大气与环境光学学报 ›› 2010, Vol. 5 ›› Issue (6): 414-420.

• 大气光学 • 上一篇    下一篇

合肥、岳西气溶胶光学特性的测量与对比分析

倪志波1,2, 黄印博1, 郭凤霞1,2, 黄宏华1, 饶瑞中1   

  1. ( 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 中国科学院大气成分与光学重点实验室, 安徽 合肥 230031; 
    3 中国科学院研究生院, 北京 100039 )
  • 收稿日期:2010-04-19 发布日期:2010-11-30
  • 通讯作者: 倪志波(1981-),男,山东胶州人,博士研究生,主要从事湍流大气光学特性研究。 E-mail:nzhib@126.com
  • 作者简介:倪志波(1981-),男,山东胶州人,博士研究生,主要从事湍流大气光学特性研究。
  • 基金资助:

    国家自然科学基金(40905009)、科技部基础性研究工作专项重点项目(2007FY110700)资助

Measurement and Analysis of Optical Characteristics of Aerosol in Short Term in Hefei and Yuexi

NI Zhi-bo1,2, HUANG Yin-bo1, GUO Feng-xia1,2, HUANG Hong-hua1, RAO Rui-zhong1   

  1. (1 Key Laboratory of Atmospheric  Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,  Hefei 230031, China;
     2 Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Hefei 230031, China; 
    3 Graduate School of Chinese Academy of Sciences, Beijing 100081, China)
  • Received:2010-04-19 Online:2010-11-30

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 um,岳西地区约为0.683 um。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三个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。

关键词: 大气光学, 气溶胶, 光学特性, 谱分布, 吸收系数

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 ?m, and 0.683 ?m 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.

Key words: atmospheric optics, aerosol, optical characteristic, size distribution, absorption coefficient

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