Comparison of column-integrated aerosol optical and physical properties in an urban and suburban site on the North China Plain
Comparison of column-integrated aerosol optical and physical properties in an urban and suburban site on the North China Plain
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华北平原城市和郊区的柱综合气溶胶光学和物理特性比较
DOI：
10.1007/s00376-014-4097-0
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发表时间：
2015-02
影响因子：
5.8
通讯作者：
Fan XH
中科院分区：
文献类型：
--
作者：
Fan Xuehua;Xia Xiang'ao;Chen Hongbin;Xia Xiang'ao;Chen Hongbin;Fan XH
利用Cimel太阳光度计2004年10月至2012年6月的观测资料，研究了位于华北平原的北京和香河两个AERONET站点气溶胶的柱积分光学特性。发现的突出特点是气溶胶光学厚度（AOD）的季节性中位数在两个站是很好的协议。两站气溶胶光学厚度的相关系数均大于0.84，绝对差值均小于0.05。这两个站点（一个城市，另一个郊区，相距70公里）的AOD的良好一致性表明，在大北京地区的气溶胶污染是区域性的。然而，我们发现显着的差异，在吸收的折射率的真实的和虚部的指数（AAE），从而单次散射的散射（SSA），和差异是季节性的。除上述参数外，当两站的细模分数（FMF）和细模有效半径有显著差异时，这一特征在秋季更为突出。北京地区4个波长的SSA值均低于香河地区，但在某些情况下差异不显著。AAE和精细模式有效半径的显著差异表明，在NCP上，城市和郊区的气溶胶物理和化学性质存在差异。
The column-integrated optical properties of aerosol in Beijing and Xianghe, two AErosol RObotic NETwork (AERONET) sites situated on the North China Plain (NCP), are investigated based on Cimel sunphotometer measurements from October 2004 to June 2012. The outstanding feature found is that the seasonal medians of aerosol optical depth (AOD) at the two stations are in good agreement. The correlation coefficients and the absolute differences between AOD at the two stations are larger than 0.84 and less than 0.05, respectively. Good agreement in AOD at these two sites (one urban and the other suburban; 70 km apart) indicates that aerosol pollution in the Greater Beijing area is regional in nature. However, we find significant differences in the absorption Ångström Exponent (AAE), the real and imaginary part of the refractive index, and thereby the single scattering albedo (SSA), and the difference is seasonally dependent. The feature is found to be more prominent in fall when the fine-mode fraction (FMF) and fine-mode effective radius are significantly different at the two stations, besides the parameters mentioned above. The SSA in Beijing at four wavelengths shows lower values as compared to those in Xianghe, although the difference is not significant in some cases. Significant differences in AAE and fine-mode effective radius indicate that there are differences in aerosol physical and chemical properties in urban and suburban regions on the NCP.
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影响因子：
4.4
作者：
Holben, BN;Tanré, D;Zibordi, G
通讯作者：
Zibordi, G
影响因子：
--
作者：
C. Koven;I. Fung
通讯作者：
C. Koven;I. Fung
DOI：
10.1080/10473289.2005.10464726
发表时间：
2005-09-01
影响因子：
2.7
作者：
Hao, JM;Wang, LT
通讯作者：
Wang, LT
影响因子：
--
作者：
Can Li;L. Marufu;R. Dickerson;Zhanqing Li;T. Wen;Yuesi Wang;Pucai C. Wang;Hongbin Chen;J. Stehr-J.
通讯作者：
Can Li;L. Marufu;R. Dickerson;Zhanqing Li;T. Wen;Yuesi Wang;Pucai C. Wang;Hongbin Chen;J. Stehr-J.
DOI：
--
发表时间：
--
期刊：
--
影响因子：
--
作者：
Z. Li;X. Gu;L. Wang;D. Li;Y. Xie;K. Li;O. Dubovik;G. Schuster;P. Goloub;Y. Zhang-Y.-Zha
通讯作者：
Z. Li;X. Gu;L. Wang;D. Li;Y. Xie;K. Li;O. Dubovik;G. Schuster;P. Goloub;Y. Zhang-Y.-Zha