高原气象

高原气象 >

2013 , Vol. 32 >Issue 5: 1293 - 1307

DOI: https://doi.org/10.7522/j.issn.1000-0534.2012.00116.

论文

基于AERONET和SKYNET网观测的中国北方地区气溶胶光学特征分析

  • 高中明 ,
  • 闭建荣 ,
  • 黄建平
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  • 半干旱气候变化教育部重点实验室/兰州大学 大气科学学院, 甘肃 兰州730000

网络出版日期: 2013-10-28

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Analysis on Aerosol Optical Property over Northern China from AERONET and SKYNET Observations

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Online published: 2013-10-28

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摘要

利用AERONET和SKYNET两个国际气溶胶网站提供的2.0等级气溶胶数据产品， 分析了中国北方地区榆中、 北京、 香河、 榆林、 敦煌和蒙古国达兰扎达嘎德6站气溶胶光学特征的日变化规律和季节变化特征， 并对其影响机制进行了研究。结果表明， 由于受沙尘天气的影响， 中国北方地区和蒙古国各测站春季气溶胶光学厚度均出现了较高值， 而波长指数则出现了最低季节平均值， 气溶胶粗\, 细粒子的体积谱分布也表现出明显的特征差异。此外， 由于受局地人类活动的影响， 各测站气溶胶光学参数也表现出不同的变化特征， 即在夏季相对湿润的环境下， 北京和香河站受当地城市污染气溶胶吸湿增长的影响， 其气溶胶光学厚度比其他季节都大， 同时该地区夏季单次散射反照率也出现了明显增大。

关键词： 气溶胶光学厚度; 波长指数; 体积谱分布; 单次散射反照率

本文引用格式

高中明 , 闭建荣 , 黄建平 . 基于AERONET和SKYNET网观测的中国北方地区气溶胶光学特征分析[J]. 高原气象, 2013 , 32(5) : 1293 -1307 . DOI: 10.7522/j.issn.1000-0534.2012.00116.

Abstract

The column-integrated optical properties of aerosol over northern China and southern Mongolia were investigated based on sun/sky radiometer measurements made at five Aerosol Robotic Network (AERONET) sites and one SKYNET site. Multi-year averaged daily and monthly  changes of aerosol optical depth (AOD) and ngstrm exponent were presented, and seasonal mean of aerosol volume size distribution, single scattering albedo, and asymmetry factor were also analyzed. The result shows that with the influence of dust storm activity every spring, the annual cycle of AOD show a spring and/or summer maximum, and  ngstrm exponent exhibited a springtime minimum, as well as the aerosol volume size distributions of coarse/fine mode presented different variation features. In addition, the aerosol optical properties of each station show the different changing trends associated with local anthropogenic pollution and biomass burning. For example, due to the influences of hygroscopic growth of aerosols from relative humidity increases in summer, the annual cycle of aerosol optical depth over Beijing and Xianghe stations show a summer maximum, and the single scattering albedo increase significantly.

Key words： Aerosol optical dept; Angstrom exponent; Volume size distribu; Single scattering al

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