Optical properties of spring aerosol in typical areas of China

Ze-yang LIU; Xue-bin LI; Gang SUN; Qing LIU; Ning-quan WENG

doi:10.3788/OPE.20202805.1021

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Optical properties of spring aerosol in typical areas of China

Modern Applied Optics | 更新时间：2020-07-09

- Optical properties of spring aerosol in typical areas of China
- Optics and Precision Engineering Vol. 28, Issue 5, Pages: 1021-1028(2020)
- 作者机构：
  
  1.中国科学院安徽光学精密机械研究所中国科学院大气光学重点实验室，安徽合肥 230031
  2.中国科学技术大学研究生院科学岛分院，安徽合肥 230031
  3.中国科学技术大学环境科学与光电技术学院，安徽合肥 230026
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20202805.1021
  CLC： P407.4
- Received：24 October 2019，
  
  Revised：24 December 2019，
  
  Accepted：24 December 2019，
  
  Published：15 May 2020
- 稿件说明：
移动端阅览
Ze-yang LIU, Xue-bin LI, Gang SUN, et al. Optical properties of spring aerosol in typical areas of China[J]. Optics and precision engineering, 2020, 28(5): 1021-1028.
DOI：

Ze-yang LIU, Xue-bin LI, Gang SUN, et al. Optical properties of spring aerosol in typical areas of China[J]. Optics and precision engineering, 2020, 28(5): 1021-1028. DOI： 10.3788/OPE.20202805.1021.

摘要

为了研究不同地区的气溶胶光学特性，了解地区间气溶胶成分和来源的差异，建立了典型地区的气溶胶光学模式。基于POM02太阳辐射计测量的太阳直射辐射和散射辐射值，利用SKYRAD算法获得了青海德令哈、安徽合肥、广东茂名3个地区的春季气溶胶光学特性参数，包括谱分布、折射指数和单次散射反照率等。然后基于这些参数对气溶胶来源和分布特征进行分析，最后分析了浮尘天气对气溶胶光学参数的影响。结果表明：德令哈地区大气清洁度较高，24%的光学厚度分布在0.2以下，气溶胶来源单一，以大粒子为主导；合肥地区有39%的波长指数分布在0.8~1.0之间，折射率实部随波长变化不明显，气溶胶来源复杂，以小粒子为主导；茂名地区54%的光学厚度集中在0.5左右，分布区间稳定；沙尘天气中，大粒子的增加是气溶胶光学厚度增大的主要原因。

Abstract

The aim of this study is to determine aerosol optical characteristics in different regions

understand the differences in aerosol composition and source between regions

and establish a typical regional aerosol optical model. First

based on the direct and scattered solar radiation measured by POM02 solar radiometer and using skyrad algorithm

the aerosol optical parameters in spring in Delingha

Qinghai

Hefei

Anhui

and Maoming

Guangdong were obtained. These parameters include spectral distribution

refractive index

single scattering albedo

etc. Based on these parameters

the source and distribution characteristics of aerosols were analyzed. Likewise

the influence of dust weather on aerosol optical parameters was analyzed. The results show that the atmospheric cleanliness in Delingha area is high

24% of optical thickness is distributed below 0.2

and the source of aerosol is single and dominated by large particles. Similarly

39% of the wavelength index in Hefei area is distributed between 0.8—1.0

the real part of refractive index does not change significantly with wavelength

and the source of aerosol is complex and dominated by small particles. Finally

54% of optical thickness in Maoming area is concentrated around 0.5

and the distribution area is complex stability. In dust weather

the increase of large particles is the main reason for the increase in aerosol optical thickness.

关键词

Keywords

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