A comparative analysis of aerosol properties in dust and haze-fog days in a Chinese urban region
A comparative analysis of aerosol properties in dust and haze-fog days in a Chinese urban region
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中国城市地区沙尘与霾天气溶胶特性对比分析
DOI：
10.1016/j.atmosres.2010.10.015
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发表时间：
2011-02
影响因子：
5.5
通讯作者：
Xiaoli Bu
中科院分区：
文献类型：
--
作者：
Xingna Yu;Bin Zhu;Yan Yin;Jun Yang;Yanwei Li;Xiaoli Bu
利用2001 - 2007年北京地区的太阳辐射和天空辐射测量资料，对北京地区沙尘和霾两种严重污染天气的气溶胶光学特性进行了对比分析。气溶胶光学厚度（AOD）在不同天气条件下变化明显，沙尘日平均为1.70，霾日平均为1.26。沙尘日平均α值为0.48，雾日平均α值为1.11，沙尘日显著低于雾日。沙尘日和大雾日的体积粒径分布的最大值分别出现在半径0.09-0.25μm和0.11-0.25μm处。沙尘天气时，粗振型在2.2-2.9μm处有最大值，而在大雾天气时，粗振型在2.2-3.8μm处有最大值。在不同的天气条件下，粒径分布的优势模态有明显的差异。在灰霾天气，气溶胶谱分布以细模态为主。沙尘日气溶胶谱分布以粗模态为主，粗、细模态的平均体积浓度比为8.3。在440、675、870和1020 nm处，沙尘日的单次散射平均值约为0.92，霾日的单次散射平均值约为0.89。与沙尘日数和霾日数相比，沙尘暴日数的增加主要是由于沙尘粒子数量的增加。从气候的角度看，北京沙尘日和霾日在440- 1020 nm波段的不对称因子分别为0.70和0.65。沙尘日的散射相函数在前向和后向均大于雾日，沙尘日在0°和180°的散射相函数分别为381.18和0.23，而雾日在0°和180°的散射相函数分别为86.48和0.20。
A comparative study on the aerosol optical properties of two severe pollution phenomena occurred in Beijing, i.e. dust and haze-fog, was analyzed using solar and sky radiance measurements from 2001 to 2007. The aerosol optical depth (AOD) showed a distinct variation under different weather conditions, with an average 1.70 in dust days and 1.26 in haze-fog days. The values of Ångström exponent (α) in dust days were significantly lower than those of haze-fog days, with an average of 0.48 in dust days and 1.11 in haze-fog days. The fine modes of volume size distributions showed the maxima peak at radius 0.09–0.25μm in dust days and radius 0.11–0.25μm in haze-fog days. The coarse modes showed the maxima peak at radius 2.2–2.9μm in dust days, and radius 2.2–3.8μm in haze-fog days. The size distributions showed a distinct difference in dominant mode for the different weather conditions. For haze-fog days, the fine mode was dominant in the aerosol size distribution. However, the coarse mode was dominant in the aerosol size distribution of dust days with the average volume concentration ratio of coarse to fine modes being 8.3. The averages of single scattering albedo (SSA) were found to be about 0.92 for dust days and 0.89 for haze-fog days at 440, 675, 870 and 1020nm. In comparison with dust days and haze-fog days, the growth in SSA was due to the addition of amount of dust particles. In view of climate, the asymmetry factor at wavelengths 440–1020nm were about 0.70 for dust days and 0.65 for haze-fog days in Beijing. The scattering phase functions of dust days at forward and backward directions were commonly larger than those of haze-fog days, with values of 381.18 at 0° and 0.23 at 180° for dust days, and lower values of 86.48 at 0° and 0.20 at 180° for haze-fog days.
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影响因子：
2
作者：
Anil Kumar Yadav;Krishan Kumar;Awg Makarimi bin Hj Awg Kasim-Awg-Makarimi-bin-Hj-Awg-Kasim-104749359;M. P. Singh;S. Parida;Maithili Sharan
通讯作者：
Anil Kumar Yadav;Krishan Kumar;Awg Makarimi bin Hj Awg Kasim-Awg-Makarimi-bin-Hj-Awg-Kasim-104749359;M. P. Singh;S. Parida;Maithili Sharan
影响因子：
4.4
作者：
Husar, RB;Tratt, DM;Malm, WC
通讯作者：
Malm, WC
DOI：
10.3402/tellusb.v50i4.16131
发表时间：
1998-09
期刊：
Tellus B
影响因子：
--
作者：
Xiao Y. Zhang;R. Arimoto;G. Zhu;Tuo Chen;G. Zhang
通讯作者：
Xiao Y. Zhang;R. Arimoto;G. Zhu;Tuo Chen;G. Zhang
影响因子：
--
作者：
G. Zhuang;Jinghua Guo;Hui Yuan;Chengyi Zhao
通讯作者：
G. Zhuang;Jinghua Guo;Hui Yuan;Chengyi Zhao
DOI：
10.1007/s11270-006-9276-x
发表时间：
2007-05
期刊：
Water, Air, and Soil Pollution
影响因子：
--
作者：
P. Herckes;Hui-qing Chang;Taehyoung Lee;J. Collett
通讯作者：
P. Herckes;Hui-qing Chang;Taehyoung Lee;J. Collett